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BECE Mathematics 2019 Paper

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Question : 15

Total: 40

A tank in the form of a cuboid has length 6 m and breadth 4 m . If the volume of the tank is

36\text{ m}^3

, find the height.

$\;\; 0.67\text{ m}$
$\;\; 1.5\text{ m}$
$\;\; 1.8\text{ m}$
$\;\; 5.0\text{ m}$

Solution:

Volume of a cuboid

=

Length

\times

Breadth

\times

Height

Dividing both sides by Length

x

Breadth to make Height the subject

\Rightarrow

Height

=

Volume of cuboid

/

(Length

\times

Breadth)

\Rightarrow

The height of the cuboid

=\frac{36}{6 \times 4}=\frac{3}{2}=1.5\text{ m}

NOTE: 6 goes into 36, 6 times and 2 goes into 6, 3 times and 4, 2 times

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