The surface area of the walls that need to be painted can be calculated by finding the surface area of each wall and adding them together.
Surface area of a rectangular wall = Length x Height
Surface area of the 20 ft long walls = 20 ft x 8 ft = 160 sq ft (there are 2 of these walls)
Surface area of the 15 ft wide walls = 15 ft x 8 ft = 120 sq ft (there are 2 of these walls)
Surface area of the ceiling = 20 ft x 15 ft = 300 sq ft
Surface area of the floor = 20 ft x 15 ft = 300 sq ft
Total surface area to be painted = 160 sq ft x 2 + 120 sq ft x 2 + 300 sq ft + 300 sq ft
= 320 sq ft + 240 sq ft + 300 sq ft + 300 sq ft
= 1160 sq ft
So, the total surface area that needs to be painted, including the floor and ceiling, is 1160 square feet.
For Monica's 14th birthday she wants to make over her bedroom the first phase in the bedroom makeover is painting her room if Monica's room is 20 ft long 15 ft wide and feet high I'm not surface area of the room that you are going to paint including the force and she wants to make over her bedroom the first phase in the bedroom makeover is painting her room if Monica's room is 20 ft long 15 ft wide and feet high I'm not surface area of the room that you are going to paint including the floor and ceiling squares
1 answer