Question

circumfrences of two circles are in ratio of 2:3 then what will be their areas?

Answer 1

first circle let circumference be 2x .
2x = 2 $\pi$ r
r = x/$\pi$
area = x/$\pi$ * x/$\pi$ *

second circle let circumference be 3x .
3x = 2 $\pi$ r
r = 1.5 x/$\pi$
area = x/$\pi$ * x/$\pi$ * $\pi$ * 2.25

ratio = 4:9

Answer 2

simply its 4:9
how...?
   circumferance is in the ratio 2:3
 radius contain a square in it hence the answer is simply 4:9