If the radius of the base of a right circular cone is 3r and its height is equal to the radius of the base, then its volume is(a) 13πr3(b) 23πr3(c) 3πr3(d) 9πr3

If the radius of the base of a right circular cone is 3r and its heigh

1.	If the radius of the base of a right circular cone is 3r and its height is equal to the radius of the base, then its volume is(a) 13πr3(b) 23πr3(c) 3πr3(d) 9πr3
Answer» If the radius of the base of a right circular cone is 3r and its height is equal to the radius of the base, then its volume is (a) $\frac{1}{3} {πr}^{3}$ (b) $\frac{2}{3} {πr}^{3}$ (c) $3 {πr}^{3}$ (d) 9 ${πr}^{3}$