Circle - Jamb Mathematics Past Questions and Answers

Question 16:

• JAMB 2013

A chord of a circle subtends an angle of 120° at the centre of a circle of diameter \(4\sqrt{3} cm\). Calculate the area of the major sector.

A. 32\(\pi\) cm\(^2\)
B. 4\(\pi\) cm\(^2\)
C. 8\(\pi\) cm\(^2\)
D. 16\(\pi\) cm\(^2\)

Question 17:

• JAMB 1978

A pyramid is constructed on a cuboid. The figure has

A. Twelve faces
B. Thirteen vertices
C. Fourteen edges
D. Fifteen edges
E. Sixteen edges

Question 18:

• JAMB 1978

In the figure, DE//BC: DB//FE: DE = 2cm, FC = 3cm, AE = 4cm. Determine the length of EC.

A. 4cm
B. 6cm
C. 3cm
D. 2cm
E. 1cm

Question 19:

• JAMB 1978

In the Figure FD\\AC, the area of AEF = 6sq.cm. AE = 3cm, BC = 3cm, CD = 5cm, < BCD is an obtuse angle. Find the length of BD.

A. \(\sqrt{33}\)
B. 6
C. 4
D. 2\(\sqrt{13}\)
E. 4\(\sqrt{5}\)

Question 20:

• JAMB 1979

If the value of \(\pi\) is taken to be \(\frac{22}{7}\), the area of a semi-circle of diameter 42m is

A. 5544m²
B. 1386m²
C. 132m²
D. 264m²
E. 693m²