Question

Can you please help me out with a question

Answer 1

Formular for total surface area of a cylinder

`TSAofacylinder=2nr^2\text{ + 2nrh}`
`\begin{gathered} T\mathrm{}S\mathrm{}A\text{ = 2 }*\text{ }\pi\text{ }*7^2\text{ + 2 }*\pi*7*21ft^2^{} \\ \text{ = 307.876 + }923.628 \\ \text{ = 1231.504 ft}^2 \\ =1231.5ft^2\text{ (nearest tenth)} \end{gathered}`

S = 1231.5 sq ft