To find an area of a rectangle, take the length and width and multiply the two together. In your case the length is 4, the width is 2, find the product... so 4 x 2 = 8. Thus the area of the rectangle is 8 units squared. It's perimeter is 12, which means 2l x 2w or 2(length) x 2(width) = 2(4) x 2(2) = 12.
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4x4 square: perimeter - 16 area - 16 6x2 rectangle perimeter - 16 area - 12
A rectangle has 2 pairs of equal sides. perimeter is the sum of the lengths of all sides: Perimeter = 12 + 12 + 16 + 16 = 56 Ft Area = 12 x 16 = 192 Ft2
4
Perimeter = 12 + 12 + 8 + 8 = 40.
A rectangle with sides of 3 and 4 units will meet the requirements.