Question

The formula for the surface area of a cylinder is:

SA = 2π r 2 + 2πrh note: that π= 3.14

a. Solve for h showing all work.







b. If the height of a can of soup is 5 inches and the radius is 1.5 inches, what is the surface area?

Answer 1

Below in bold.

Explanation:

a. SA = 2π r^2 + 2πrh

2πrh = SA - 2π r^2

h = (SA - 2πr^2)/2πr

When π = 3.14 we have

h = (SA - 6.28r^2)/ 6.28r

b. SA = 6.28*1.5^2 + 6.28*1.5* 5

= 61.23 in^2