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3 August, 14:27

A rectangle has a perimeter of 25 meters. If the lengths of the sides of the rectangle are multiplied by 7 to make a new rectangle, what is the perimeter of the new rectangle?

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  1. 3 August, 15:32
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    175 m

    Step-by-step explanation:

    We are given;

    The perimeter of a rectangle as 25 m

    We are required to determine the new perimeter if the sides of the rectangle are multiplied by 7.

    We know that;

    Perimeter of a rectangle = 2 (L+W)

    Therefore, initially;

    2 (L+W) = 25 m

    Hence;

    L + W = 12.5 m

    if the sides are multiplied by 7, then;

    New length = 7L

    New Width = 7W

    Thus;

    New perimeter = 2 (7L+7W)

    = 14 (L + W)

    but, L + W = 12.5

    Thus;

    New perimeter = 14 (12.5)

    = 175 m

    Therefore, the new perimeter will be 175 m
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