Question

A cylinder has the net shown.

net of a cylinder with diameter of each circle labeled 1.4 inches and a rectangle with a height labeled 2 inches

What is the surface area of the cylinder in terms of π?

11.87π in2
9.52π in2
7.56π in2
3.78π in2

Answer 1

3.78π in.²

Explanation:

area of circle = πr²

area of rectangle = LW

diameter = d = 1.4 in.

radius = r = d/2 = 1.4 in. / 2 = 0.7 in.

surface area = 2πr² + 2πrh

surface area = 2π(r² + rh)

surface area = 2π(0.7² + 0.7 × 2) in.²

surface area = 3.78π in.²