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Posted by on Thursday, October 20, 2011 at 6:02pm.

one side of a right triangle is 12.5 ft the perimeter is 38.7 ft. what is the length of the hypotenuse and the other unknown side?

  • maths - , Friday, October 21, 2011 at 10:29am

    Let a,b, be the legs, and c the hypotenuse

    a+b+c = 38.7
    a + b + √(12.52+b2) = 38.7

    √(12.52+b2) = 26.2 - b

    12.52+b2 = b2 - 52.4b + 686.44

    52.4b = 530.19

    b = 10.1
    a = 12.5
    c = 16.1

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