Question

A solid wooden toy is in the form of a cone mounted on a hemisphere. if the radii of the hemisphere and the base of the cone are 4.2 cm each and the total height of the toy is 10.2 cm find the volume of wood used in the toy. also, find its total surface area

Answer 1

height of cone =10.2-4.2=6
$volume \: of \: cone = \frac{\pi}{3} \times {r}^{2} \times h$
$volume \: of \: hemisphere = \frac{2}{3} \times \pi \times {r}^{3}$

Answer 2

Thz is d answer. Hope it helps...use 6 as a height not 10.2