Question

the radii of two circle are in ratio 2:3 what is the ratio of their ciecumferences

Answer 1

Let the radii be r₁ and r₂

r₁ : r₂ = 2 : 3

Ratio of circumferences = 2πr₁ : 2πr₂ = r₁ : r₂ = 2 : 3

Answer 2

the formula for the circumference of circle is 2πr.......so the ratio would be 2πr1 : 2πr2 I.e 2:3