2 Answers

Thalita · Answer 1 · 2020-02-01T22:35:47+0000

Answer: A. 622 sq. units

Explanation:

The surface area of a cylinder is given by :-

$S.A.=2\pi r(r+h)$ , where r is the radius , h is height of the cylinder.

Given : The height of the cylinder : h= 2 units

The radius of the cylinder : r= 9 units

Then , the surface area of a cylinder will be :-

$S.A.=2(3.14159) 9(9+2)\\\\\Rightarrow\ S.A.=622.03482\approx622\text{sq. units}$

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