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I don’t know how to do this or the answer I need help

I don’t know how to do this or the answer I need help-example-1

1 Answer

3 votes

Given:

The radius, r=4cm.

The height, h=9cm.

To find the surface area of the cylinder:

The surface area of the cylinder is,


\begin{gathered} A=2\pi rh+2\pi r^2 \\ =2\pi*4*9+2\pi*4^2 \\ =72\pi+32\pi \\ =104\pi cm^2 \end{gathered}

Thus, the surface area of the cylinder is,


104\pi cm^2

User Robert Longson
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