DieselShip's Online Content Library

Q9. (a) A piece of lead pipe 350mm long has an internal diameter of 40mm and a wall thickness of 5mm. It is melted down and recast into a solid hemisphere.

The density of the lead is 11340 kg per m³.

Determine EACH of the following:

(i) the diameter of the hemisphere; (5)

(ii) the mass of the hemisphere. (1)

(b) Fig Q 9(b) shows the graphs of the functions

Determine EACH of the following

(i) the co-ordinates of points A and B; (4)

(ii) the area of triangle AOB. (6)