Question

Two circles have areas in the ratio 49:81. Find the ratio of their circumference.

Answer 1

The ratio of their circumference is 7:9.

Answer 2

7/8

Step-by-step explanation:

area of circle = pie r ^2

perimeter of circle= 2 pie r

let the radius be r^1andr^2

49/81

7^2/9^2

so we get 7/8 is the answer