Question

Please help me with questions 8 and 10. it would literally save my life :)

Answer 1

Explanation:

8)

around the tank = 12 * circumference

circumference = d
`\pi`

c = 30
`\pi`

c = 94.2477796

area around tank = 12 * 94.2477796 = 1130.973355

now top of tank

area of a circle =
`\pi`
`r^(2)`

`\pi`*
`15^(2)` = 706.858347

add the two surface areas together for the total

706.858347 + 1130.973355 = 1837.832

total surface area = 1837.8
`ft^(2)`

10) all I see in the picture is a cylinder, but it's saying "composite" shape so I know there is probably more, but the cylinder is

`\pi`*
`3^(2)`* 10 = 282.7
`ft^(2)`