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30 March, 10:31

A triangle has an area of 30 square feet. If the height is four feet less than its base, find the dimensions of the triangle.

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  1. 30 March, 10:34
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    the formula is bh/2=area

    b * (b-4) / 2=16

    (b^2-4b) / 2=16

    b^2-4b=32

    b^2-4b-32=0

    (b-8) (b+4) = 0

    b-8=0

    b=8 feet for the base.

    h=8-4=4 for the height.

    proof

    8*4/2=16

    32/2=16

    16=16
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