199,636 views
40 votes
40 votes
Find the surface area of the cylinder below. use 3.14 for l~l

Find the surface area of the cylinder below. use 3.14 for l~l-example-1
User Pave
by
2.3k points

1 Answer

16 votes
16 votes

\begin{gathered} \text{Surface area of a cylinder =}^{} \\ 2\pi r^2\text{ + 2}\pi rh \\ r\text{ = }(11ft)/(2)\text{ = 5.5ft} \\ h=42ft \\ \\ \text{Area = 2 x 3.14 x5.5}^2\text{ + 2 x 3.14 x 5.5 x 42} \\ =189.97\text{ + 1450.68} \\ =1640.65ft^2 \end{gathered}

User HaveNoDisplayName
by
2.8k points