A tube of tennis balls has the following measures: 4-inch diameter and a height of 8 inches. What is the surface area of the tube of tennis balls? (Use 3.14 for π.)

213.52 in.2
301.44 in.2
226.08 in.2
125.6 in.2

Question

A tube of tennis balls has the following measures: 4-inch diameter and a height of 8 inches. What is the surface area of the tube of tennis balls? (Use 3.14 for π.)

213.52 in.2
301.44 in.2
226.08 in.2
125.6 in.2

anonymous · Answer

I swear I showed you this earlier o_O

anonymous · Answer

Cylinder surface area = 2*pi*r^2 + 2*pi*r*h

You have all the numbers just plug it in, except you're given 4 inch diameter, so divide that by 2 and you get 2 as the radius.

anonymous · Answer

It's just arithmetic at this point.

anonymous · Answer

@girl8r7y Have you made an attempt?

anonymous · Answer

b

anonymous · Answer

@iambatman

anonymous · Answer

Can you show me how you got that?