geometry

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If the area of Triangle T, sides 5,12, and 13 equals the area of rectangle R, width 3, then what is the perimeter of rectangle R?

  • geometry -

    your triangle is right-angled, since
    3^2+5^2=13^2
    so the area is 30

    so rectangle R is length x width = 30
    3length = 30
    length = 10
    so its perimeter is 2(10+3) = 26

  • geometry -

    Where did you get 3^2 from?

  • geometry -

    I really don't know, lol, must be senility

    of course I meant
    5^2 + 12^2 = 13^2

    the rest is still correct.

  • geometry -

    Lol, okay. Thank you very much !

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