Post-UTME Physics 2011 Objective — Question 14

Question 14 of 16 from the Post-UTME Screening (Post-UTME) Physics 2011 Objective paper, with the correct answer and a full explanation.

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

A. 56*pi cm^2
B. 72*pi cm^2Correct
C. 96*pi cm^2
D. 192*pi cm^2

Explanation

Total surface area = 2*pi*r*h+2*pi*r^2 = 40*pi+32*pi = 72*pi cm^2. (Note: this question is a near-duplicate of one found in the FUTO 2013/2014 Type D session in this same PDF set; the same independently-worked answer is used here.)

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