3 Work: Mia sells used MP3 players. The average cost to package MP3 players is given by the
equation, c(x) = 2x2 – 40x + 2200, where x is the number of MP3 players she packages
in a week. How many players must she package to minimize her average cost?

Ellis will need 244.92 ft2 of paint.

Step-by-step explanation:

First we need to find the surface area of one fencepost.

The fencepost is cylindrical, so the surface area is given by the equation:

If the height of the fencepost is 6 feet and the radius is 0.5 feet, we have:

The surface area of the 12 fenceposts is:

Ellis will need 244.92 ft2 of paint.