Question

A cylinder has a height of 11 inches and radius of 9 inches. Find the surface area of the cylinder in terms of π.

Answer 1

b

Explanation:

Answer 2

`\bf \textit{surface area of a cylinder}\\\\ s=2\pi r(h+r)\quad \begin{cases} r=radius\\ h=height\\ ------\\ h=11\\ r=9 \end{cases}\implies s=2\pi (9)(11+9) \\\\\\ s=18\pi (20)\implies s=360\pi`