Question : What is the total surface area of a solid right circular cylinder of radius 7 cm and height 8 cm?$(\pi=\frac{22}{7})$
Option 1: 560 cm2
Option 2: 660 cm2
Option 3: 850 cm2
Option 4: 760 cm2
Correct Answer: 660 cm 2
Solution : Radius = 7 cm Height = 8 cm $\therefore$ The total surface area of a cylinder = $2\pi r(h +r)$ = $2\times \frac{22}{7}\times 7(7+8)$ = $44\times 15$ = 660 cm 2 Hence, the correct answer is 660 cm 2 .
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