Suppose that a student in your class wants to know why we multiply only 2 of the lengths of the sides of a rectangle to determine the rectangle’s area. After all, when we calculate the perimeter of a rectangle, we add the lengths of the 4 sides of the rectangle, so why don’t we multiply the lengths of the 4 sides to fmd the area?
- Explain to the student what perimeter and area mean, and explain why we carry out the perimeter and area calculations for a rectangle the way we do.
- Describe some problems or activities that might help the student understand the calculations.
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