Question

the circumference of two circles are in the ratio 1 is to 3 find the ratio of the areas​

Answer 1

Answer: the answer is 1:9

Step-by-step explanation:

The explanation is given below

Hope this helps u!!!

Answer 2

Answer:

Given:

Ratio of circumference=1:3

Let circumference of circle-1 and circle-2 be C1 and C2 respectively.

C1:C2=1:3

$circumference = 2\pi \: r$

2/pi/r1: 2/pi/r2= 1:3

r1:r2=1:3

Ratio of areas,

$area \: of \: circle = \pi \: r {2}$

pi r1^2:pi r2^2=r1^2:r2^2

=(r1:r2)^2

=(1:3)^2

Ratio of circles =1:9