Question

Surface Area of Cylinder=2πrh+2πr2

Where r is the radius of the cylinder and h is the height of the cylinder.
Find the surface area when r is 8 inches and h is 8 inches.
A. 160π in²
B. 154π in²
C. 288π in²
D. 256π in²

Answer 1

D.
`256\pi\ in^2`

Explanation:

To do this, we need to plug in the given values into the equation:

`SA=2\pi rh+2\pi r^2\\SA = 2\pi 8(8)+2\pi 8^2\\SA=2\pi 64+2\pi 64\\SA=128\pi + 128\pi\\SA=256\pi \ in^2`