A hollow ball is made of rubber that is 2 centimeter thick. The ball has a diameter of 20 centimeters at the outside surface.

What is the exact volume of rubber used to make the ball?
Please explain how to find the volume and i will mark brainliest

Answers

Answer 1

Answer:

628.57CM²

Step-by-step explanation:

20/2=10

VOLUME OF CYLINDER=PIR^2H

22/7*10*10*2=628.57


Related Questions

One side of a tabletop is 12x – 5 units long. Another side of the tabletop is 7x + 4 units long. If the tabletop is a square, what is the value of x?

Answers

Answer:

no c

Step-by-step explanation:

What is the difference between 31 1/4 and 35

WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST

Answers

Answer:

3.75

Step-by-step explanation:

35 - 31 1/4 = 3.75

In ΔHIJ, h = 3.7 cm, i = 5.4 cm and j=3.8 cm. Find the measure of ∠H to the nearest degree.

Answers

Answer:

43

Step-by-step explanation:

deltamath

Answer:43

Step-by-step explanation:

Please Solve
The equation below

Answers

Answer:

4h+3

Step-by-step explanation:

3h+h+3

4h+3

write in its simplest form : 30 : 1 ¼ hour​

Answers

Answer:

6

Step-by-step explanation:

A dog shelter has 22 poodles. The number of poodles is doubling every year. How long before the shelter has 22,528 poodles?

Please help

Answers

Answer:

I think 1024 days? Which is around 2 years...

This is actually geometry but anyone PLEASE PLEASE PLEASE HELP ME ​

Answers

Answer:

Step-by-step explanation:

[tex]sin\theta =\frac{opposite\ side}{hypotenuse}\\ \\ sin37^o=\frac{6}{10}[/tex]

Please help I’ll give brainlieast answer all questions

Answers

Answer:

1.The formula to convert Celsius to Fahrenheit is:

F = 1.8 C + 32

Multiply the Celsius temperature by 1.8.

Add 32 to this number.

Report the answer in degrees Fahrenheit.

Example: Convert 20°C to Fahrenheit.

F = 1.8 C + 32

F = 1.8 (20) + 32

1.8 x 20 = 36 so F = 36 + 32

36 + 32 = 68 so F = 68°F

20°C = 68°F

2.9.92

Step-by-step explanation:

Sheila is biking at a constant speed. She travels 54 meters in 9 seconds. Part A How many meters per second does Sheila travel?

Answers

Answer:

Step-by-step explanation:

6 meters/ seconds

Step 1:  Find the unit rate

total distance/total time

54/9

6 meters / seconds

Awnser: 6 meters/ seconds

Answer:  

Answer:

She Travles 6 MPH

Step-by-step explanation:

6x9=54

The artist will use small congruent square tiles to cover each region without any gaps or overlaps. Based on the information, which statement is true?

Answers

Answer:

The number of tiles needed to cover Region Z is the same as the number of tiles needed to cover both Region X and Region Y.

B.
How do I do this?

Answers

Answer:

61.928 is angle C

Step-by-step explanation:

hope this helps

Answer:

Use the law of cosines.

Example:

c^2 = a^2 + b^2 - 2ab cosc

what is value of x in the multi-step equation
22-9x=9x+10

Answers

Answer:

x= 2/3

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

22−9x=9x+10

22+−9x=9x+10

−9x+22=9x+10

Step 2: Subtract 9x from both sides.

−9x+22−9x=9x+10−9x

−18x+22=10

Step 3: Subtract 22 from both sides.

−18x+22−22=10−22

−18x=−12

Step 4: Divide both sides by -18.

x=2/3

Two trains on opposite tracks leave the same station at the same time. One train travels at an average speed of 80 kilometres per hour and the other travels at an average speed of 70 kilometres per hour. How long after they leave the station will they be 50 km apart?

Answers

Answer:

1/3 hr or 20 min.

Step-by-step explanation:

Call the trains A and B

Remember d = rt

Distance train A travels is 80t

Distance train B travels is 70t

Now, 80t + 70t = 50

              150t = 50

                    t = 50/150 = 1/3 hr or 20 min.

Answer: 20 minutes( 0.3333 hours) after they leave the station will they be 50 km apart, if the Two trains on opposite tracks leave the same station at the same time.

Step-by-step explanation:
One train travels at an average speed of 80 km/hr and the other travels at an average speed of 70 km/hr.

PLS HELP!! RIGHT ANSWER GETS BRAINLIEST!! pls only answer if u know the answer 100% this is a test!
What is the solution to the system of equations?

(4, 0)

(−2, 3)

(0, 6)

(−4, 0)

Answers

Answer:

The answer is (-2,3)

Step-by-step explanation:

If you look at the coordinate plane, you'll notice that the x -values are negative and the y-values are positive. So, if you look at where the two lines meet, they meet at the point (-2,3).

Hope I helped!!!

what is the sum of the interior angle measures of a polygon that has 20 sides

Answers

Answer:

3240°

Step-by-step explanation:

Formula is ( 2n-4)90° where n is the no of sides

(2×20-4)90°

(40-4)90°

36×90

3240°

2 Last year the girls' basketball team had 8 fifth-grade students and 7 sixth-grade students. What was the ratio of sixth- grade students to fifth-grade students on the team? A. 8:15 B. 8:7 C. 7:8 D. 15:8 HELPP

Answers

Answer:

7:8

Step-by-step explanation:

There are 7 sixth graders and 8 fifth graders. You don't put the whole of all of them in the ratio.

The expression 2 - 2 + 5x is equivalent to the expression 5x

True or False

Answers

Answer:

True!

Step-by-step explanation:

Put all the whole numbers together so 2+ (-2) cancels out

2-2+5x

positive 5x would be the only thing left so there you go!!!

Identify the points which of the following coordinate pairs make the equation x - 9y = 12 true?

Show your reasoning.

1. ( 12, 0 )

2. ( 0, 12 )

3. ( 3, -1 )

4. ( 0, - 4/3 )

Answers

Answer:

Step-by-step explanation:

Because in equation x-9y=12

If we put x=12 and y=0 then it satisfy equation. (12)-9(0)=12

So, (12,0) make equation

(3,-1) also make equation

(3)-9(-1)=12

(0,-4/3) also make equation

Because

0-9(-4/3)=12

Only (0,12) is not making

Beacuse

(0)-9(12) is not equal to 12

The slope of a given line is shown below. Find the slope of a line parallel to the given line and the slope of a line perpendicular to the given line.

M=5

The slope of a line parallel to the given line is m=___.

Answers

Answer:

The slope of a line parallel to the given line = 5

The slope of a line perpendicular to the given line = - 1/5

Step-by-step explanation:

for brainiest:):):):):)

Answers

Answer:

number one is 22 number two is 16 number three is 32

Step-by-step explanation:

Please help quickly I will mark brainliest!! At least the equation of the graph please

Answers

Answer:

a. The domain of the function is -3 < x ≤ 5

b. The range of the function is -3 ≤ y < 3

c. The y-intercept is the point (0, 0)

d. The values of 'x' at which f(x) ≥ 0 are;

x = -3, x = 1, x = 5

e. The intervals over which f(x) is decreasing are;

-3 < x ≤ - 1, and 1 ≤ x ≤ 3,

f. The local minimums are;

(-1, -1), and (3, -3)

Step-by-step explanation:

a. The domain of a function is the set of the possible independent variable values

Therefore, the domain of the function is -3 < x ≤ 5

b. The range of a function is the set of the possible values of the dependent variable

Therefore, the range of the function is -3 ≤ y < 3

c. The y-intercept is the point (0, 0)

d. The values of 'x' for which f(x) ≥ 0 are;

x = -3, x = 1, x = 5

The range of values of 'x' where f(x) ≥ 0 are;

-3 < x ≤ - 1.5, 0 ≤ x ≤ 1.5, 4.5 ≤ x ≤ 5

e. f(x) is decreasing over the following intervals;

-3 < x ≤ - 1, and 1 ≤ x ≤ 3,

f. The local minimums are the points that are lowest compared to other nearby points

The local minimums are;

(-1, -1), and (3, -3).

Greg bought 28 pounds of sugar for $11.
How many dollars did he pay per pound of sugar?

Answers

Answer:

$2.54

Step-by-step explanation:

You divide 28 by 11 and you get 2.54545454545, which you can just sum down to 2.54 (I think thats right)

$2.54 but the 54 is repeated so if you want, you can round up to $2.55

In a certain Algebra 2 class of 24 students, 6 of them play basketball and 7 of them play baseball. There are 13 students who play neither sport. What is the probability that a student chosen randomly from the class plays basketball or baseball?

Answers

Answer:

13/24 or 54%

Step-by-step explanation:

There are 24 students in total. Total will also be the denominator. Add 6 + 7 to find the amount that play the sports. Insert the number (13) as the numerator. Divide 13 by 24 if you need to find the percent!

Answer: 11/24

Step-by-step explanation:

2+5+4 =11

Expect the 13 person/students didn't play

Total people 24

24-13=11

11/24

What is 1% of 4,935 ?
O A. 0.04935
O B. 0.4935
O C. 4.935
D. 49.35
E. 493.5

Answers

Answer:

D. 49.35

Step-by-step explanation:

[tex]\frac{4935}{100 X 100}[/tex] X 100 = 49.35

The expression 10a+6c gives the cost (in dollars) for a adults and c children to eat at a buffet restaurant.

a. The cost for 1 adult is $ ?
. The cost for 1 child is $ ?




b. The total cost for 1 adult and 3 children is $ ?





Question 2
c. Is $30 enough for a family of 2 adults and 2 children to eat at the buffet?..

Answers

Answer:

Answer: The total cost is  assuming the cost for 1 adult is  and the cost for 1 child is

Step-by-step explanation:

Which set of inequalities best describes the region R?

Answers

Answer:

C--- x+y<-1y>2

Step-by-step explanation:

hope this helps!

have a good day :)

A rectangular doubles tennis court is (8x - 2) ft long and (4x - 4) ft wide. Which expression represents the perimeter of the tennis court?
A (12x - 6) ft
B. (12x + 6) ft
C (24x - 12) ft
D. (24x + 12) ft
If you can please show the steps​

Answers

Answer:

C

Step-by-step explanation:

Remark

The easiest way to do this is to add the two givens together and then multiply by two. Why 2?  Because the formula is P = 2(L + W)

Givens

L = 8x - 2

W = 4x - 4

Solution

P = 2*(8x - 2 + 4x - 4)

P = 2*(12x - 6)

P = 24x - 12

C

A tipi is set up with tip poles that are 36 feet long. The poles extend 3 feet above the top of the tipi. The diameter of the tipi is 14 feet. How tall is the tipi, rounded to the nearest tenth?​

Answers

Answer:

i dont know

Step-by-step explanation:

The school orchestra is creating a CD of their last concert. The total cost to make the CD is $300 plus $2.50 per CD. They are selling the CDs for $10 each. How many CDs will they need to sell to make a profit?

Answers

Answer:

They need to sell more than 40 CDs to make a profit.

Explanation:

They will make a profit when the sales are higher than the cost and with the information provided, you can write the following inequality:

10x>300+2.5x, where x is the number of CDs sold

Now, you can solve for x:

10x-2.5x>300

7.5x>300

x>300/7.5

x>40

According to this, the answer is that they need to sell more than 40 CDs to make a profit.

SOMEONE PLEASE HELP ME WITH THIS ILL GIVE YOU BRAINLY IF YOU GET IT RIGHT!!!!!!

Answers

Answer:

400

Step-by-step explanation:

please mark me brainliest if i was right

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