Question

A circle has area 100 times the area of another circle.What is ratio of their circumference

Answer 1

Let the area of two circles be R1 and R2.

$\frac{piR1^2}{piR2^2} = \frac{100}{1}$

$\frac{R1^2}{R2^2} = 100$

$( \frac{R1}{R2})^2 = 100$

$\frac{R1}{R2} = 10$

R1:R2 = 10:1.


Hope this helps!

Answer 2

Hi,

Please see the attached file!


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