Question

If the ratio of the diameter of two circles is5: what is the ration of their circumferences

Answer 1

`\displaystyle \\ (D_1)/(D_2)=5 \\ \\ \\ \frac{\text{Circumference 1}}{\text{Circumference 2}} = (\pi D_1)/(\pi D_1) =(D_1)/(D_2)=\boxed{5}`