Question

A dance studio wants to use square mirror tiles to cover two walls in their studio that measure 2 feet by 2 feet. Each wall measures 9 feet tall by 22 feet long. The studio instructor has requested that a 1 foot gap be left between the floor and the start of the mirrors. How many mirror tiles are needed to cover both walls?

Answer 1

Since one foot on the bottom will not be covered we need to cover a wall that is 8 feet tall by 22 feet long.
A = bh  or area = 8 x 22 = 176 square feet.

Each tile is 2 x 2 or 4 ft ² 
So the question becomes, "How many 4ft² tiles do we need to cover 176 ft²"?

176 ÷ 4 = 44 tiles

Answer 2

Size of each tiles = (2*2) square inch
                             = 4 square inch
Since 1 inch gap needs to be kept with the floor, so the height of floor that needs to be covered with square mirror tiles is 8 inch.
Size of each wall = (8*22) square inch
                             = 176 square inch
So the number of mirror tiles required per wall = 176/4 tiles
                                                                           = 44 tiles
Number of tiles required to cover both walls = (44*2) tiles
                                                                       = 88 tiles.