Question

if the circumference of two circle in the ratio 3:1 then the ratio of the areas will be

Answer 1

let the radius of two circles be r & r'.

ratio of circumference = (2pi r/2pi r')=3:1
r/r'=3:1

ratio of area= (pi r^2/pi r'^2)=(r/r')^2=9:1

Answer 2

the ratio will be 9:1 hope it helps you