WAEC 2025 · Paper 1 · Q30✱✱

Solid mensuration

A cylindrical container, closed at both ends, has radius $7\text{ cm}$ and height $5\text{ cm}$ . What is its volume? $\left[\pi = \frac{22}{7}\right]$

Worked solution (try it first)

Volume of a cylinder: $\pi r^2h$ .
$\frac{22}{7} \times 7^2 \times 5 = 154 \times 5$
$= 770\text{ cm}^3$ , option A.

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