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Math Help - Area of triangle

  1. #1
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    Area of triangle

    Can anyone help with this? I need the area of triangle PQR. Thanks.
    Attached Thumbnails Attached Thumbnails Area of triangle-pqrs.bmp  
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  2. #2
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    First find PR by using pythagora's theorem in the lower triangle PSR
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  3. #3
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    OK, so how do I get the area of PQR from PR = 13?
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  4. #4
    A riddle wrapped in an enigma
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    Quote Originally Posted by josephk View Post
    OK, so how do I get the area of PQR from PR = 13?
    Hi josephk,

    Use Heron's formula.
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