Mathematics Middle School

A mirror frame in the shape of an oval is shown below. The ends of the frame form semicircles:
An oval is formed by a rectangle with semicircles at each end. The length of the rectangle is 54 inches. The width of the rectangle is 27 inches.

Which of the following is the perimeter of the inner edge of the frame?

(π = 3.14)

192.78 inches
246.78 inches
277.56 inches
331.56 inches

please help lol

Answers

Answer 1

Answer:

The answer is 192.78 inches

Step-by-step explanation:

An oval is formed by a rectangle with semicircles at each end. We can visualize this easily.

The length of the rectangle is 54 inches.

The width of the rectangle is 27 inches.

The perimeter of rectangle is =

= 162 inches

And because there are two semicircles, we can combine them to form a circle. So, perimeter of a circle is called a circumference.

The width of the rectangle forms the diameter, so its half will be the radius.

r =

The circumference is given by :

= inches

Now as the described oval shape is a complete figure without lines inside, we will subtract the width of both sides of the rectangle from the complete perimeter.

The complete perimeter is = inches

The inner edge perimeter will be = = 192.78 inches

pls mark as brainliest

Answer 2

Answer:

1st option

Step-by-step explanation:

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[see below]

Step-by-step explanation:

Using the Pythagorean Theorem:

[tex]6^2+4.5^2=m^2\\\\36+20.25=m^2\\\\5\boxe6.25=m^2\\\\\boxed{m=7.5}[/tex]

Hope this helps.

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Pls help me so I can pass

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help me please (look at image)

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Answers

Answer:

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Median: 77.5

Mode: 80, 90

Step-by-step explanation:

-7 + 60 + 65 + 70 + 75 + 80 + 80 + 85 + 90 + 90 = 688. Then divide by 10 because there are 10 numbers.

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Hopefully I didn't answer too late.

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Answers

Answer:

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Step-by-step explanation:

using pythagoras theorem

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using sin rule

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2.868=AC

Ac=2.868 sorry if I am wrong

Plz help will be marked BRAINLIEST!!
Thanks man!

Answers

Answ

Step-by-step explanation:

pls mark me as brainliest

(adding more to this but since the question only asked for one answer this should be enough!)

Step-by-step explanation:

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k : 31 (everything in bold is uncited knowledge from me doing this years ago :,)

m : 90

so g must = 90 because not only is it in a right triangle, but also the corner of the rectangle. this goes for hk, m and jf, they all must add up to 90.

given a = 59 we can also find d from this, as it must add up to 180.

then adding g [90] + a [59] we get 149, which we then subtract from 180 to get j.

we get 31 from that and can now subtract 90 from that to find f, which is also 59, so f=59.

Can I get help...with steps plzzz

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Step-by-step explanation:

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-kiniwih426

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____________________

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Step-by-step explanation:

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can u mark me as brainlist plz...

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ASAP! Adrians cat ate 1/3 of a bag of cat treats in September and 1/3 of the same bag of treats in October. What part of the bag of cat treats did Adrians cat eat in both months?

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1. Corresponding

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Answers

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Step-by-step explanation:

Answer:

<12 and <10

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Answers

5. The number of visitors increase in April, spike in August and then decrease in September.

6. December is in winter, therefore many people do not travel during December.

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I hope this helped!

“5. The number of visitors increases in April, spike in August and then decreases in September. 6. December is in winter, therefore many people do not travel during December. 7. There are not a lot of holidays in February and March, so people are either working or going to school instead of visiting”

Find the radius of the circle.
Circumference = 18.84 yd
a. 3 yd
b. 59.16 yd
c. 6 yd
d. 118.32 yd

what's the answer??

Answers

Answer:

A. 3yd

Step-by-step explanation:

There are two formulas that can be used for the circumference of a circle:

c = πd and c = 2πr

Since we want to solve for the radius, let's use c = 2πr

The circumference, 'c', is 18.84 inches

Since 'π' is an irrational number, we use its approximation of 3.14

We are trying to solve for 'r', which is the radius

The circumference, 'c', is 18.84 inches

Since 'π' is an irrational number, we use its approximation of 3.14

We are trying to solve for 'r', which is the radius

Plugging in, we get:

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Since 'π' is an irrational number, we use its approximation of 3.14

Notice there are the same amount of decimal places (two!) in the answer as the combined amount of spaces in the numbers being multiplied!

18.84 = 6.28r

The goal is to isolate and solve for 'r', which is the radius

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