Question

7. The areas of two circles are in the ratio of 16:25. Find the ratio of their circumference​

Answer 1

Answer:

Let R be the ratio of one cirlce and R' be the ratio of another circle.

Putting it in the equation we get,

πR^2 : πR'^2 = 16 :25

R^2 : R'^2 = 4:5

Hence the ratio of their circumference is 4:5.