A school custodian waxed a gymnasium floor that measured 20 feet by 20 feet. How many square feet did she have to wax?
A.400 square feet
B.40 Square feet
C.800 Square feet
D.80 Square feet
You are trying to find the area which is s^2. What's 20*20? You do the math.
To find the number of square feet the custodian had to wax, we need to multiply the length and the width of the gymnasium floor. In this case, the length is 20 feet and the width is also 20 feet.
To calculate the area, we use the formula:
Area = Length x Width
Applying this formula, we can find the area:
Area = 20 feet x 20 feet
Now, let's simplify this:
Area = 400 square feet
So, the custodian had to wax 400 square feet. Therefore, the answer is A. 400 square feet.