Look at the square:
What is the area of the square?
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Look at the square:
What is the area of the square?
The area of the square is equal to the side of the square raised to the second power.
That is:
Since the drawing gives us one side of the square, and in a square all sides are equal, we will solve the area of the square as follows:
Look at the square below:
What is the area of the square?
Area measures two-dimensional space, so you multiply length × width. Since a square has equal sides, you multiply side × side, which is the same as squaring: .
Area is the space inside (side²) while perimeter is the distance around the edge (4 × side). For our square: Area = 400 square units, Perimeter = 80 units.
Yes! Area is always measured in square units. Since the side is 20 units, the area is 400 square units (or units²).
Think: "Square the square!" A square has equal sides, so you multiply side × side = side². The word "square" in math means "to the power of 2"!
That gives you the perimeter (80), not the area! Remember:
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