multiply the length by the width(a.k.a the length by the height).
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creat a flowchart that will compute for the area and perimeter of a square?
Multiply the length and width to find the area of both a rectangle and square.
The area is 144 square inches.
Are you serious ? For a square: Perimeter = 4 times sqrt(area)
Area of the square: 9 times 9 = 81 square cm