Mensuration - Jamb Mathematics Past Questions and Answers

Question 116:

• JAMB 2004

What is the rate of change of the volume V of a hemisphere with respect to its radius r when r = 2?

A. 8π
B. 16π
C. 2π
D. 4π

Question 117:

• JAMB 2004

The length L of a simple pendulum varies directly as the square of its period T. If a pendulum with period 4 sec. is 64 cm long, find the length of pendulum whose period is 9 sec

A. 96 cm
B. 324 cm
C. 36 cm
D. 144 cm

Question 118:

• JAMB 2005

A sector of a circle has an area of 55 cm². If the radius of the circle is 10 cm, calculate the angle of the sector
[π = 22/7]

A. 45^o
B. 63^o
C. 75^o
D. 90^o

Question 119:

• JAMB 2005

Find the curved surface area of a cone with circular base diameter 10 cm and height 12 cm

A. 25 πcm²
B. 65 πcm²
C. 120 πcm²
D. 156 πcm²

Question 120:

• JAMB 2005

A chord of a circle subtends an angle of 60o at the length of a circle of radius 14 cm. Find the length of the chord

A. 7 cm
B. 14 cm
C. 21 cm
D. 28 cm