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21 February, 07:27

Construct a right triangle when one side is 4 cm and sum of the other side and hypotenuse is 8cm

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  1. 21 February, 07:57
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    4^2 + x^2 = (8 - x) ^2

    16 + x^2 = 64 - 16x + x^2 the two x^2 cancel out

    16 = 64 - 16x

    - 48 = - 16x

    x = 3

    check

    4^2 + 3^2 = (8 - 3) ^2

    16 + 9 = 5^2

    25 = 25
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