The area of a square is given by multiplying the length and the width
Since the sides of a square are all equal, we will end up multiplying two numbers that are the same
We want the area of the patio to be in between 80 and 125
Think of the square numbers between 80 and 125
8 × 8 = 64
9 × 9 = 81
10 × 10 = 100
11 × 11 = 121
12 × 12 = 144
The possible numbers of tiles we could use is
81 tiles with 125 - 81 = 44 tiles left over
100 tiles with 125 - 100 = 25 tiles left over
121 tiles with 125 - 121 = 4 tiles left over
