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5 January, 17:38

A rectangle with a perimeter of 30 centimeters is twice as long as it is wide. What is the area of the rectangle in square centimeters?

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  1. 5 January, 18:43
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    Take the small side as x, the longer side is twice as long, i. e. 2x.

    Perimeter = 2 small sides plus 2 long sides.

    Perimeter = 2x + 2 (2x) = 30

    Perimeter = 6x=30

    x=5cm.

    So small side is 5cm and long side is 10cm.

    Area is one side multiplied by another.

    Area = 5 * 10 = 50 square cm.
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