The height of a cylinder and its volume are 15 cm and 2310 cm3, respectively. Find the total surface area.
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Correct answer: A
Explanation
The correct answer is option 1 i.e. 968 cm2
Height = 15 cm and Volume = 2310 cm³
⇒Volume = πr2h
⇒2310 = 22/7 × r2 × 15
⇒r2 = 49 ⇒ r = 7 cm
Now, Total Surface Area = 2πr (r + h) = 2 × 22/7 × 7 × (7+15) = 44 × 22 = 968 cm2