Question

The area of circle A is 36 times greater than the area of circle B. If the radius of circle B is 5 meters. What is the radius of circle A?

A. 5 meters
B. 30 meters
C. 32 meters
D. 36 meters

Answer 1

Each number is getting multiplied by pi, but they get squared before that. Let's find what Circle B's radius is when squared.

5²=25

Let's multiply that by 36.

25×36=900

So, the radius of Circle A is the square root of 900.

√900=30

So, the answer is B. 30