Question

Mr. Felton has contracted to paint the interior of 10 classrooms. Each class room is 22' x 30' x 10' high. He is painting only the walls. If one gallon of paint covers 400 sq feet, how many gallons of paint does he need?

Answer 1

Mr. Felton will need 26 gallons of paint to cover the walls of 10 classrooms, with each classroom contributing 1040 square feet of wall space to be painted.

Step-by-step explanation:

Mr. Felton needs to calculate the amount of paint required to paint the walls of 10 classrooms. Each classroom has walls with dimensions 22' by 10' high and 30' by 10' high. To find the total square footage of the walls for one classroom, we multiply the perimeter of the room by the height (excluding the floor and ceiling), then subtract any non-paintable areas such as doors and windows.

However, since we are told to ignore such areas for this calculation, the total wall area for one classroom would be ((22' + 30') x 2) x 10' = 1040 square feet. Since one gallon covers 400 square feet, we divide 1040 by 400 to find the gallons needed per room, and then multiply by 10 for all classrooms. The calculation is as follows: (1040 sq feet per classroom / 400 sq feet per gallon) x 10 classrooms = 26 gallons. Therefore, Mr. Felton will require 26 gallons of paint to paint the 10 classrooms.