GEOMETRY AND TRIGONOMETRY - Jamb Mathematics Past Questions and Answers

Question 351:

• JAMB 1992

In the figure, PQR is a semicircle while PQ and QR are chords. QS is the perpendicular from Q to the diameter PR. What is the expression for QS?

A. QS = PS\(\sqrt{SR}\)
B. QS = \(\sqrt{(PS SR)}\)
C. QS = 2\(\sqrt{(PS SR)}\)
D. QS = \(\frac{1}{\sqrt{2}}\)\(\sqrt{(PS SR)}\)

Question 352:

• JAMB 1992

The diagram is a circle with centre O. Find the area of the shaded portion

A. 9(\(\pi - 2) cm^2\)
B. 18\(\pi cm^2\)
C. 9\(\pi cm^2\)
D. 36\(\pi cm^2\)

Question 353:

• JAMB 1993

A rectangular polygon has 150^o as the size of each interior angle. How many sides has the polygon?

A. 12
B. 10
C. 9
D. 8

Question 354:

• JAMB 1993

Calculate the length in cm. of the area of a circle of diameter 8cm which subtends an angle of 22\(\frac{1}{2}\)^o at the centre of the circle

A. 2\(\pi\)
B. \(\pi\)
C. \(\frac{2}{3}\)
D. \(\frac{\pi}{2}\)

Question 355:

• JAMB 1993

The three sides of an isosceles triangle are length of lengths (x + 3), (2x + 3), (2x - 3) respectively. Calculate x.

A. 5
B. 1
C. 3
D. 6