Question

The ratio of radii oftw circle is 3:2 .find the ratio of there areas.

Answer 1

9:4 is the correct answer.
taking 3 and 2 as radius.
area of circle = πr²
3:2= 3/2
ratios of area of circle =
π(3)²/π(2)²= 3²/2²= 9/4
= 9:4

Answer 2

let the ratios be x
3x and 2x

area of circle =pi r2

22/7×9x2
28.28x2


area of 2nd circle=22/7×4x2
=12.57


ratios =28.28:12 .57