WAEC Mathematics Past Questions, Answers, And Explanations - Mathematics

Waec Mathematics Questions

Question 386:

WAEC 1994

Calculate, correct to 2 significant figures, the length of the arc of a circle of radius 3.5cm which subtends an angle of 75° at the centre of the circle. [Take π = 22/7].

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A 2.3cm
B 4.6cm
C 8cm
D 16cm
E 110cm

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Question 387:

WAEC 1994

A circle has radius x cm. What is the area of a sector of the circle with angle 135°, leaving the answer in terms of x and π?

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A \( \frac{\pi x^2}{8} \)
B \( \frac{3\pi x^2}{8} \)
C \( \frac{5\pi x^2}{8} \)
D \( \frac{3\pi x}{8} \)

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Question 388:

WAEC 1994

In the diagram, PQRS is a trapezium with PQ||SR. STR is a straight line, PSHQT, PTHQR. If |PQ| = 12cm and the height of the trapezium is 9cm, find its area.

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