Question

What is the total surface area of a cylinder with a base

diameter of 9 inches and a height of 6 inches? (use 3.14 for
ti)

Answer 1

423.9

Explanation:

To solve this problem you need to use the formula for surface area. This formula can either be used with the radius or the diameter. I prefer using diameter because it is easier to remember and it is easier to calculate. The formula writes as follows:
`SA=d\pi h+d\pi ^(2)\\\\`. To use this formula all we have to do is insert the values into the formula and solve.

`SA=d\pi h+d\pi ^(2)\\\\SA=(9)\pi(6)+\pi(9) ^(2)\\\\SA=54\pi+81\pi\\\\SA=54\pi+81\pi\\\\SA=135\pi\\\\SA=423.9`

423.9 is our answer.