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Question

If the radius and the height of a cylinder are 2 cm and 3 cm respectively, then its total surface area is:

A
20π cm2
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B
16π cm2
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C
12π cm2
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D
6π cm2
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Solution

The correct option is A 20π cm2
Given, the radius of the cylinder(r)=2 cm
and the height of the cylinder(h)=3 cm

The total surface area of the cylinder =2πr2+2πrh
=2π(2)2+2π×2×3
=(2π×4)+(2π×6)
=8π+12π
=20π cm2
Hence, option (a.) is the correct choice.

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