Question

Q5. The ratio of the areas of two
circles is 25:36 ,find the ratio of the
circumference.(2)
A​

Answer 1

Step-by-step explanation:

Suppose the radius of two circles are r1, r2

Ratio of their areas=

$\frac{\pi {(r1)}^{2} }{\pi {(r2)}^{2} } = \frac{25}{36}$

$\frac{ {(r1)}^{2} }{ {(r2)}^{2} } = \frac{25}{36}$

$\frac{(r1)}{r2} = \frac{5}{6}$

Ratio of their circumference =

$\frac{2\pi(r1)}{2\pi(r2)} = \frac{r1}{r2} = \frac{5}{6}$