Question

Tick (✓) the correct answer:
A rectangular water reservoir contains 42000 litres of water. If the length of reservoir is 6 m and its breadth is 3.5 m, the depth of the reservoir is
(a) 2 m
(b) 5 m
(c) 6 m
(d) 8 m

Answer 1

(a) 2 m

42000 L = 42 m³
$\mathrm{Volume}=lbh$
$\therefore \mathrm{Height}\left(h\right)=\frac{\mathrm{volume}}{lb}=\frac{42}{6\times 3.5}=\frac{6}{6\times 0.5}=2m$