Surface areas and Volumes of simple solids - Jamb Mathematics Past Questions and Answers

Question 11:

• JAMB 1991

Find the total area of the surface of a solid cylinder whose base radius is 4cm and height is 5cm

A. 56\(\pi\) cm²
B. 72\(\pi\) cm²
C. 96\(\pi\) cm²
D. 192\(\pi\) cm²

Question 12:

• JAMB 2021

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