Question

the ratio of radius of two circles is a 8:9 . find the ratio of their circumference and also find the ratio of their areas

Answer 1

Hey
There is ur answer

Answer 2

Hii frnd...

Let the radius of first cicle be 8x (r1) and second be 9x (r2)

Ratio of circumference= 2pie r1 / 2 pie r2
2 pie cancel 2 pie
so the ratio will be 8:9

Ratio of area= pie r1^2 / pie r2^2
pie cancel pie
so the ratio will be 64:81

Here is ur ans.

Hope it helped u!!!