Find an area of a circle if the diameter of the circle is 40 cm

Find An Area Of A Circle If The Diameter Of The Circle Is 40 Cm

Answers

Answer 1
the A will be 1256.64cm 2
Answer 2

Answer:

1256cm^2

Step-by-step explanation:

The area of a circle is πr^2.

The radius is half of the diameter, so it's 20 cm.

A=3.14*(20cm)^2

A=3.14*400cm^2

A=1256cm^2


Related Questions

Find sin
A. 3/5
B.4/5
C.1
D.5/4

Answers

Answer:

Sin < A is 4 / 5

Step-by-step explanation:

sin = Opposite side / Hypotenuse side

sin = 8 / 10

sin = 4 / 5

Help PLEASE!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer:

=22 m²

Step-by-step explanation:

Total area= Area of rectangle 1 + Area of rectangle 2

Can someone help me?It's urgent and thank you!

Answers

Answer:

D. 5√10

Step-by-step explanation:

√40 + √90 = 2√10 + 3√10 = 5√10

Correct choice is D

After how many seconds ,t, will the object be 75 meters above the ground

Answers

Answer:

It will be above the ground in C

Step-by-step explanation:

plz help I need to finish this Geometry
How do you know what method (SSS, SAS, ASA, AAS) to use when proving triangle congruence?

Answers

It depends on what type of triangle you’re dealing with, and what is marked similar.

Find the surface area of a sphere
Show all the work

Answers

Answer:

452cm2

Step-by-step explanation:

surface area of sphere =4πr2

so 4π62 which equals to 452.39.

hope this helps u understand:)

3k is an example of?

Answers

3k is an example of Variable

Answer:

3k would be an example of a veriable.

Name a pair of adjacent angles and a pair of vertical angles in the figure

Answers

Answer:

Adjacent: <ABC and <CBD

Vertical: <ABC and <EBD

Step-by-step explanation:

Adjacent angles: Angles that share one ray.

Vertical Angles: Opposite angles created by the intersection of two lines.

Hope this helps!!

An isosceles triangle has an angle that measures 120°. Which other angles could be in that isosceles triangle? Choose all that apply. 75, 50, 30, 25

Answers

Answer:

30.

Step-by-step explanation:

The 120 degree has to be the vertex angle.

The other 2 angles in the triangle will be congruent as the triangle is isosceles.

These 2 are both = (180-120) / 2

= 60/2

= 30 degrees.

A gym charges a one-time fee of $60 to join and membership dues of $25 per month
Part A
Complete the table to show how the total cost in dollars, C, and the number of months, m, of gym membership are related. Drag numbers to
complete the table. Numbers may be used once or not at all.
865
200
410
205
135
75
505
260
ות
3
8
14
C
Part B.
Which equation represents the total cost based on the number of months of gym membership?
O А.
C = 25m
B В.
C = 60 + 25m
Review progress
Question 5
of 22
Back
Next →

Answers

Answer:

Step-by-step explanation:

C=25m plus 75

The volume of the following figure is
240 in² which of the following is the missing side length?
A. 7 in
B. 6 in
C. 8 in
D. 5 in

Answers

Answer:

B cause it same

Step-by-step explanation:

If am wrong correct me thanks

can anyone help me please

Answers

Answer:

orange :P

Step-by-step explanation:

volume = a x a x a = 15 x 15 x 15 =3375 cubic mm

Answer:

3375 cm (so the 3375 with the 3 in the corner)

DONT PUT THE ONE WITH THE 2 IN THE CORNER. Put the one with the 3 in the corner. I have made this mistake too many time lol.

Work:

Given, side of a cube =15 cm

Volume of a cube = Length x Width x Height

A cubes length, width, and height are the same.

15×15×15=3375 cm squared  

 

HELPPPPPPPPPPPPPPPPPPPPP MEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE! asap

Answers

Answer:

209.25 ft²

Step-by-step explanation:

2.7cm * 5 = 13.5 ft

3.1cm * 5 = 15.5 ft

Area

a = 13.5 * 15.5

a = 209.25 ft²

Answer:

8.37cm

Step-by-step explanation:

2.7cm×3.1cm=8.37cm

Area rectangle is length by width

7. Find the volume of space consumed by the toilet paper without the center cylinder.
4cm
SHOW YOUR WORK!
*
14cm
12 cm
I
Volume

Answers

Answer:

7. 1583.36 cm³

8. 13,627.18 m³

Step-by-step explanation:

Volume of space consumed by the paper = volume of outer cylinder - volume of center cylinder

✔️Volume of Outer Cylinder:

Volume = πr²h

r = ½(12) = 6 cm

h = 14 cm

Volume = π*6²*14

Volume = 1583.36 cm³

✔️Volume of center cylinder:

Volume = πr²h

r = ½(4) = 2 cm

h = 14 cm

Volume = π*2²*14

Volume = 175.93 cm³

✅Volume of space of the toilet paper = 1583.36 - 175.93 = 1583.36 cm³

8. Volume of the solid = volume of the cone + volume of the cylinder

✔️Volume of the cone = ⅓πr²h:

r = 13 m

h = 14 m

V = ⅓*π*13²*14

V = 2,477.67 m³

✔️Volume of the cylinder = πr²h

r = 13 m

h = 21 m

V = π*13²*21

V = 11,149.51 m³

✅Volume of the solid = 2,477.67 + 11,149.51 = 13,627.18 m³

Which of the following mapping diagrams does not represent a function?

Answers

Answer:

C

Step-by-step explanation:

C => 7 is mapped into both 8 and 12, and in a function, this is not allowed

The trampoline park charges a $8 for kids and $4 for adults. Your extended family is going there to celebrate your birthday. Your family has at most $190 dollars to spend on entrance fees. You can invite at most 35 people. What are some possible combinations of adults and kids who could go to your party? Write a system of equations for this situation.

Answers

Answer:

The answer is below

Step-by-step explanation:

Let x represent the number of kids and y represent the number of adults that can be invited to the park.

Since the family has at most $190 to spend, hence:

8x + 4y ≤ 190    (1)

Also, the maximum number of invites is 35 people. This is represented by the equation:

x + y ≤ 35       (2)

Graphing equation 1 and equation 2 using geogebra online graphing

We have the solution as:

(0, 35), (23.75, 0) and (12.5, 22.5)

Since the number of people must be a whole number, the possible solutions are:

0 children and 35 adults or 23 children and 0 adults or 12 children and 22 adults

Please please help me if you can I really need it
If you can please answer all of the questions
They should be simple if you know basic geometry
Thank you so much

Answers

Answer:

1- c:25

2-cant help

3- A:2,8

4-cant help

Write the equation of the line passing through the points (-2,8) and (-8,2).

Answers

Answer:

y=-4x

Step-by-step explanation:

First, out it into y=mx+b. Then find the slope(m). insert slope and one set of coordinates into equation and solve for y-intercept (b). Then you have your answer.

Answer:

y = 1x + 10

Step-by-step explanation:

y2 - y1 / x2 - x1

2 - 8 / -8 - (-2)

-6/ -6

1

y = 1x + b

2 = 1(-8) + b

2 = -8 + b

10 = b

what is 8690 rounded off to the neareset hundred?
am just asking​

Answers

Answer:

8700

Step-by-step explanation:

If it is 8,690 and you round to the nearest hundred it would add one to 90 making it 8,700

Answer:

Did not necessarily round up or down, but to the hundred that is nearest to 8690.

8690 rounded to the nearest hundred is: 8700

What are the solutions of the equation (5x − 2)(x + 6) = 0?

A. 0.4, −6
B. no real solution
C. −0.4, 6
D. 2.5, −6

Answers

Answer:

A. 0.4 , -6

Step-by-step explanation:

equate each of them to 0

5x - 2 =0 , x + 6 = 0

5x = 2 , x = 0 - 6

x = 2/5 , x = -6

x = 0.4 , x = -6

Write the equation of the line in slope-intercept form

Answers

Equation in slope intercept form: y= -1/2x + 3

- Andrew gave half of his money to support a local charity. From what was left, he spent
$22.75 on a present for his sister. If he had $183.89 left over, how much did he have to
begin with?

Answers

Okay so basically you need to see what half of the amount he started with was to do that you need to add both of the numbers ^^^ = 206.64. Which is half of the starting number so you times by two. =$413.28

Which of the following is an arithmetic sequence with a common difference of +3?
A) 17, 14, 11, 8, ...
B) 1, 3, 9, 12, ...
C) 4, 7, 10, 13, ...
D) 12, 15, 19, 24, ...

Answers

c.

4 + 3 7 + 3 1 0 + 3 1 3

what do you call a line that intrrsects two parallel lines​

Answers

Answer:

Transversal

Step-by-step explanation:

A transversal is a line that passes through two lines in the same plane at two distinct points. 

Transversals play a role in establishing whether two or more other lines in the Euclidean plane are parallel.

Eight angles of a transversal.


On this necklace the ratio of black beads to white beads is 1:3
How many more black beads do you need to add to make the
ratio of black to white 3:1?​

Answers

Answer:

8 more black beads.

Step-by-step explanation:

B=1

W=3

B:W = 1: 3

Make

B:W = 3:1 = 9:3

So we need (9-1) = 8 more black beads.

Answer: chupa verga maricon de mierda

Step-by-step explanation:

The volume of a right rectangular prism can be found by finding the product 3(6)(12) Which expression could also be used to determine the volume of this prism? 36(6) 2(3 + 12 + 6) 4(3)(12) 12 + 6 +3​

Answers

Answer:

D

Step-by-step explanation:

Find the equation of the line parallel to y = 2/3x-7
passing through A(6,-1).

Answers

Answer:

y = 2/3x - 5

Step-by-step explanation:

If two lines are parallel, they have the same slope. This means the line we are looking for has a slope of 2/3. Since we are also given a point, we can start by writing the equation in point-slope form which is represented by

[tex]y-y_{1} =m(x-x_{1} )[/tex]

Where m is the slope and (x1, y1) is a point. We have both, so we can substitute the values and simplify:

y + 1 = 2/3 (x - 6)

y + 1 = 2/3x - 4

y = 2/3x - 5

PLEASE PLEASE HELP ME PLEASE PLEASSE

EXPLANATION = BRAINLIEST

ANSWER NEEDS TO BE IN SIMPLEST FORM

please help

Answers

Answer:

the answer will be r=48-3 your answer will be 45

Answer:

(6/5) π in^2 or 1.2 π in^2

Step-by-step explanation:

the area of a circle and the area of one circle sector are proportional.

Area of the circle = radius^2 * π = 3^2 π = 9π in^2

the hidden date is that the centre angle of a circumference is 360 degrees

we have now to use a proportion that has this meaning:

if the area is 9π in^2 when the angle is 360 degrees, what is the area when the angle is 48 degrees?

9π : 360 = x : 48

x = (48 *9π)/360 = (6/5) π in^2

Graph the solution of 3x - 5<-8 or 2x – 7 >3.

Answers

Answer:

To be Honest I Really Don't know What are the Answers?

A) 3x -7 = 2x+5

3x-2x= 5+7

1x= 12

Resposta final: x=12 e so fazer sequindo o exemplo

Solve the following equation:
[tex]x + \sqrt{x+3} = 3 + 3\sqrt{1-x}[/tex]

Answers

Answer:

[tex]x+\sqrt{x+3}=3+3\sqrt{1-x}[/tex]

[tex]Remove~ Square ~root[/tex]

[tex]-36x^3+252x^2-540x+324=[/tex]

[tex]x^4-32x^3+286x^2-480x+225[/tex]

[tex]Now ~\mathrm{Switch\:sides}[/tex]

[tex]x^2-6x\sqrt{-x+1}-15x+18\sqrt{-x+1}+18=x+3[/tex]

[tex]\mathrm{Subtract\:}x^2-15x\mathrm{\:from\:both\:sides}[/tex]

[tex]x^2-6x\sqrt{-x+1}-15x+18\sqrt{-x+1}+18-\left(x^2-15x\right)=[/tex]

[tex]x+3-\left(x^2-15x\right)[/tex]

[tex]New ~Simplify[/tex]

[tex]-6x\sqrt{-x+1}+18\sqrt{-x+1}+18=-x^2+16x+3[/tex]

[tex]Subtract ~18~ from ~ both~ sides[/tex]

[tex]-6x\sqrt{-x+1}+18\sqrt{-x+1}+18-18=-x^2+16x+3-18[/tex]

[tex]Simplify[/tex]

[tex]-6x\sqrt{-x+1}+18\sqrt{-x+1}=-x^2+16x-15[/tex]

[tex]Now~ factor:[/tex]

[tex]-6x\sqrt{-x+1}+18\sqrt{-x+1}(-x+3)[/tex]

[tex]6\sqrt{-x+1}\left(-x+3\right)=-x^2+16x-15[/tex]

[tex]Solve~~-36x^{3}+252x^{2} -540x+324=x^{4} -32x^{3} +286x^{2} -480x+225=[/tex]

[tex]x=1,\:x=-3[/tex]

-----------------------hope it helps..have a nice day/night
Other Questions
a. She isFill in the blanks with correct word given in the brackets. [5]European. [a/an/the]b. The karnali islongest river of Nepal.[a/an/the]c. Deepak will meet his brotherSunday. [in/at/on]d. The dog killed two[gooses / geese]local people don't like youth clubs. [a little/a few]e. Can I have help for question B, my answer doesn't give me the mark. kilala moba ako filipino ako panget mo 12. Three fifths of the children at my party like chocolate ice cream. How many of the 20 children at my party do not like chocolate ice-cream ? . 13. I have to pack 296 apples into 8 boxes. How many apples will there be in a box if each box contains the same number of apples? There will be 3714. If I share 123 sweets equally among amongst 7 children, how many sweets will each child get? ..15. One soccer ball costs $4.50. How much will the soccer will balls in the picture cost? Estelle hosted a banquet for her extended family that cost $480.93. Estelle paid 9.25% sales tax and left an 18% tip on $480.93. What was the total cost? which beach had the smallest allied defence on d-day? Plzzzzzz helpppppp me he following data were accumulated for use in reconciling the bank account of Creative Design Co. for August 20Y6: Journalize the entries that should be made by the company that (a) increase cash and (b) decrease cash. g Isaias has a watering can that holds 3 liters of water. He uses 500 milliliters of water on each of her plants.How many plants can he water? Enter your answer in the box. You just need to convert liters to milliliters. Please help, i will give brainliest which body system makes red blood cells? A. single celledB. multi celledC. plant cell D. animal cellE. tissue F. respiratory G. transport systemH. nervous I. digestiveJ. muscularK. skeletal L. circulatory M. cells N. specialized O. nutrients P. grow Q. respire I am trying to study ahead so I can skip 9th grade.Can someone help me to find somewhere I can get the Mcgraw Hill 9th grade geography textbook? Or a website that i could read it on?Thanks very much A spring with a 10-kg mass and a damping constant 15 can be held stretched 2 meters beyond its natural length by a force of 6 newtons. Suppose the spring is stretched 4 meters beyond its natural length and then released with zero velocity. Suppose the spring is stretched 4 meters beyond its natural length and then released with zero velocity. Required:Find the position of the mass at any time t. Is fair and equal a good characteristic of a leader? Why is that? Add details to your answer to support it. Someone please help me Using the formation of formaldehyde as a model, comment on photosynthesis and the formation of sugars using what we know about entropy and free energy. Its important for female students to get a proper amount of A) carbohydrates/proteinB) ironC) calciumD) all of the above 5a. A salad bar has five kinds of salad. In how many different ways can you choose two different salads from five? 5b. Which has more different ways : Choosing two out of five ORchoosing three our of five? what roles and responsibilities do the media have in reporting human rights violations in a responsible manner in a democratic society? Please help me i'm struggling! You basically look at the bar graph on the right and see which statement is true. Brainliest and thank you! If the triangles are similar which are true