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27 June, 23:21

The height of a triangle is 4 times its base. if he are of a triangle is 200cm, what is the height

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  1. 28 June, 00:11
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    A = (h * b) / 2

    A = 200

    h = 4b

    200 = (b (4b) / 2

    200 * 2 = b * 4b

    400 = 4b^2

    400 / 4 = b^2

    100 = b^2

    sqrt 100 = b

    10 = b ... base is 10 cm

    h = 4b

    h = 4 (10)

    h = 40 < = = = height is 40 cm
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