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WAEC Mathematics 2025 Paper

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Question : 23

Total: 50

A cylindrical container, closed at both ends, has a radius of 7 cm and a height of 5 cm. Use this information to answer the questions below. Find the total surface area of the container.

35 cm $^2$
528 cm $^2$
154 cm $^2$
220 cm $^2$

Solution:

Total surface area = 2πr

^2

+ 2πrh = 2πr(r + h) ⇒ 2 ×

\frac{22}{7}

× 7 × (7 + 5) ⇒ 44 × 12 = 528 cm

^2

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