Question

Cody is painting the front door of his house. The dimensions of the door are 80 inches by 36 inches by 2 inches. If he paints all of the surfaces, how much area will he paint?

Answer 1

To find out how much area he will paint, you will find the area of all 6 faces.

Each face is in the shape of a rectangle, so use A = lw as your formula.

Front/Back:  80 x 36 = 2880 square inches 
                    2880 square inches x 2 = 5760 square inches

Right/Left Sides:  80 x 2 = 160 square inches
                           160 square inches x 2 = 320 square inches

Top/Bottom:   36 x 2 = 72 square inches
                     72 square inches x 2 = 144 square inches

5760 + 320 + 144 = 6224 square inches.

Cody will paint 6224 square inches.