Circle - Jamb Mathematics Past Questions and Answers

Question 46:

• JAMB 1991

In this figure, PQ = PR = PS and SRT = 68^o. Find QPS

A. 136^o
B. 124^o
C. 12^o
D. 68^o

Question 47:

• JAMB 1992

If the angles of quadrilateral are (p + 10)°, (2p - 30)°, (3p + 20)° and 4p°, find p.

A. 63
B. 40
C. 36
D. 28

Question 48:

• 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 49:

• 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 50:

• JAMB 1993

In the diagram, PQRS is a circle with O as centre and PQ/RT. If RTS = 32°. Find PSQ

A. 32^o
B. 45^o
C. 58^o
D. 90^o