How many feet of baseboard would you need to go around a rectangular room if the room has a length of 12 feet and a width of \(7\frac{\mathrm{1} }{\mathrm{2}}\) feet, and you must deduct 4 feet for a doorway?

How many feet of baseboard would you need to go around a rectangular room if the room has a length of 12 feet and a width of \(7\frac{\mathrm{1} }{\mathrm{2}}\) feet, and you must deduct 4 feet for a doorway?

Detailed Explanation

The perimeter of the room is 2 × 12 + 2 × 7.5 = 24 + 15 = 39 feet. Subtracting 4 feet for the doorway leaves you needing 35 feet of baseboard.