waecmaths question:
An empty rectangular tank is 250cm long and 120 cm wide. If 180 litres of water is poured into the tank, calculate the height of the water.
Option A:
6.0cm
Option B:
5.5cm
Option C:
5.0cm
Option D:
4.5cm
waecmaths solution:
$\begin{align} & \text{18}0\text{ litres is 18}0,000\text{c}{{\text{m}}^{\text{3}}} \\ & V=lbh \\ & 80000c{{m}^{3}}=250\times 120cm\times h \\ & h=\frac{180000c{{m}^{3}}}{250cm\times 120cm}=6cm \\\end{align}$
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