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10 August, 14:19

the hypotenuse of the right angled triangle is 6cm more than twice the shortest side. if the third side is 2 cm less than the hypotenuse. find the 3 sides

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  1. 10 August, 14:36
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    Let the base be p

    Hypotenuse = 2p + 6

    Perpendicular = 2p + 4

    By Pythagoras theoram

    (2p+6) ^2 = (2p+4) ^2 + p^2

    => 4p^2 + 36 + 24p = 4p^2 + 16 + 16p + p^2

    => 36 + 24p = p^2 + 16p + 16

    => p^2 - 8p - 20 = 0

    => p^2 - 10p + 2p - 20 = 0

    => p (p-10) + 2 (p-10) = 0

    => (p-10) (p+2) = 0

    p = 10 and - 2

    Length can't be negative

    So,

    p = 10

    Base = 10

    Perpendicular = 24

    Hypotenuse = 26
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