Question

The given figure shown the cross-section of a cone, a cylinder and a hemisphere all with the same diameter 10 cm, and the other dimensions are as shown.

Calculate:

(a) the total surface area,

(b) the total volume of the solid and

(c) the density of the material if its total weight is 1.7 kg..

Answer 1

Diameter = 10 cm

Therefore, radius (r) = 5 cm

Height of the cone (h) = 12 cm

Height of the cylinder = 12 cm