Question

one of the walls in megs bedroom is a square, 9 feet wide by 9ft tall. that wall has a square window that is 3ft wide and 3 ft tall. What is the area of the surface of the wall? explain how you found your anser.

Answer 1

First, we have to find the area of the wall, then the area of the window, then subtract them.

Area of wall = 9 × 9 = 81 sq.unit

Area of window = 3 × 3 = 9 sq.unit

So, the area of the wall ( excluding window ), = 81 - 9 = 72 sq. unit