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A rectangle is 3 times as long as it is wide, it's area is 108 square centimeters. What is the length? what is the width?

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2 answers

  1. L=Lenght

    W=With

    A=Area

    L=3W

    A=L*W=108

    108=3W*W

    3W^2=108 Divide with 3

    W^2=108/3

    W^2=36

    W=sqroot(36)

    W=6 cm

    L=3W

    L=3*6=18 cm

    A=L*W=18*6=108 cm^2

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  2. W=Width

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