Question

the ratio of the volumes of two cones with equal height and ratio of their radi as 2 : 5 is​

Answer 1

$\sf Volume \: of \: cone \: = \frac{ \pi r^2h}{3} \\\\\sf </p><p>Ratio \: of \: volume \: of \: cones =\frac{\frac{ \pi r^2h}{3}}{\frac{ \pi R^2h}{3} }=\frac{r^2}{R^2}= \frac{4}{25}$