Question

I don't know this. Can someone please help me. I am in 7th grade.

Answer 1

1380.25

Explanation:

So to solve this problem, you find the outside circle and subtract it from the inside circle.

So, lets find the basic values

Radius of inside circle = diameter of the inside circle / 2

= 27.6

= 13.8

Radius of outside part = 11.3

So the area of the outside circle is

A = pi r^2

= pi (11.3 + 13.8)^2

= 630.01

= 1978.23

And the area of the inside circle is

A = pi r^2

= pi (13.8)^2

= 190.44

= 597.98

To find the shaded part, we subtract the outer circle with the inner circle

1978.23 - 597.98 = 1380.25

The area of the shaded region is 1380.25

Answer 2

590 or 589.89

Explanation:

Hope this helps!