waecmaths question:
John pours 96litres of red oil into rectangular container with length 220cm and the breadth 40cm. calculate, correct to the nearest cm, the height of the oil in the container.
Option A:
11cm
Option B:
18cm
Option C:
21cm
Option D:
34cm
waecmaths solution:
$\begin{align} & V=lbh \\ & 96litres=96,000c{{m}^{3}} \\ & 96,000c{{m}^{3}}=220cm\times 40cm\times h \\ & h=\frac{96,000c{{m}^{3}}}{220cm\times 40cm} \\ & h=10.909cm \\ & h=11cm\text{ }\!\!\{\!\!\text{ to the nearest cm }\!\!\}\!\!\text{ } \\\end{align}$
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