Question

Find the surface area of the following in cubic inches.

703.36 in2
351.68 in2
401.93 in2
426.04 in2

Answer 1

D- 426.04

Explanation:

Surface area = 2rh + 2r²

So, the surface area of the cylinder is 427.04 in² which is answer choice D.

Answer 2

427.04 in²

Explanation:

Surface area = 2
`\pi`rh + 2
`\pi`r²

`A = 2\pi (8)(0.5) + 2\pi 8^2`

`A = 2\pi 4 + 2\pi 64`

`A = 25.12 + 401.92`

`A = 427.04`

So, the surface area of the cylinder is 427.04 in² which is answer choice D.