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16 May, 04:04

The length of a rectangle is three times its width. The perimeter is 160 cm. What is the number of square centimeters in the area of the rectangle?

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  1. 16 May, 06:57
    0
    1200 cm²

    Step-by-step explanation:

    width = x cm

    length = 3x cm

    perimeter = 160 cm

    2 (x + 3x) = 160

    4x = 160/2

    4x = 80

    x = 80/4

    x = 20 cm - width

    length = 3x = 3 · 20 = 60 cm

    Area = length · width = 60 · 20 = 1200 cm²
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