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Pls help It’s due tomorrow question is in the picture

Pls help It’s due tomorrow question is in the picture-example-1
User Brkeyal
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1 Answer

3 votes

Answer:

C

Explanation:

Let's find the area of each of the two circles.

First Circle:

The first circle has a diameter of 10 inches. That means the radius is 5 inches. So, its area is:


A=\pi r^2\\A=\pi (5)^2\\A=25\pi

Second Circle:

The second circle has a diameter twice that of the first. So, the diameter is 20 inches. This means that the radius is 10 inches. Find the area:


A=\pi r^2\\A=\pi (10)^2\\A=100\pi

Now, find the ratio between them by dividing:


\frac{\text{Smaller}}{\text{Larger}}=(25\pi)/(100\pi)

Simplify:


\frac{\text{Smaller}}{\text{Larger}}=(1)/(4)

1/4 is the same as 1:4

So, our answer is C :)

User Claudio Paladini
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