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 7 inches and h is 9 inches.
A. 224π in²
B. 154π in²
C. 112π in²
D. 288π in²

Answer 1

Answer: A. 224 pi in^2

Explanation:

Plugging it into the equation,

SA = 2*pi*7in*9in + 2*pi*7in^2

SA = 126pi in^2 + 98 pi in^2

SA = 224 pi in^2 (A)