Question

Given two circles whose radii are 5" and 15", the ratio of their areas is

Answer 1

The answer to your question is ratio = 9

Explanation:

Data

Circle 1 radius = 5''

Circle 2 radius = 15''

Process

1.- Calculate the area of circle 1

Area = πr²

Area = π(5)²

Area = 25π

2.- Calculate the area of circle 2

Area = πr²

Area = π(15)²

Area = 225π

3.- Calculate the ratio of the areas

ratio = 225π / 25π

= 9