Question

The radius of a smaller circle is half the length of the radius of a larger circle. The area of the larger circle is 20 square inches. What is the

approximate area of the smaller circle?
A 5 square inches
B. 10 square inches
C 12 square inches
D. 15 square inches

Answer 1

the answer to this question is a

Answer 2

A. 5 square inches

Explanation:

The formula for the radius of a circle is r = square root of A over π

If you plug in 20 for A you would get 2.52 for r

2.52 divided in 2 is 1.26

To find to area of a circle of a circle with a radius of 1.26 use the formula

A= π(1.26)^2

solve and get

4.99 or 5