ABSTRACT
Problem 1. A water tank is the shape of a rectangular prism having length 2m, breadth 75 cm and height 50 cm. Determine the capacity of the tank in (a) m3 (b) cm3 (c) litres.
Volume of rectangular prism D lð bð h (see Table 13.1)
(a) Volume of tank D 2ð 0.75ð 0.5 D 0.75m3
(b) 1m3 D 106 cm3, hence 0.75m3D 0.75ð 106 cm3 D 750 000 cm3
(c) 1 litre D 1000 cm3, hence
750 000 cm3 D 750 000 1000
litres D 750 litres
Problem 2. Find the volume and total surface area of a cylinder of length 15 cm and diameter 8 cm.
