Question
What is the area of a square that is 9 feet on one side?
- 32 feet
- 18 feet
- 81 square feet
- 64 square feet
Hint:
The formula of the area of the square is 
,where a is the side length of the square.
The correct answer is: 81 square feet
The formula of the area of the square is ,where a is the side length of the square.
Step1: Given side length of the square 
. Now we have to put it in the formula of the area of the square to get the area.
Area =
Step2: Now we will calculate the area of the square.
Area = 
Area = 
.
So, the area of the square is .
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