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-   -   How to work out the perpendicular height of a triangle (https://www.askmehelpdesk.com/showthread.php?t=470734)

  • May 14, 2010, 08:18 AM
    imsurroundedbyfish
    How to work out the perpendicular height of a triangle
    I'm about to take an important test in school, and today we did a practise run. There was one question I really didn't know how to work out. It was about the perpendicular height of a triangle, and we were given the base length and the area. Everyone around me knew the answer but I didn't even know where to start! So can anyone tell me how to work out the perpendicular height when given the base length and area and vice versa?
  • May 14, 2010, 08:21 AM
    ballengerb1

    Are you 100% sure there wasn't at least one more piece of info supplied?
  • May 14, 2010, 09:13 AM
    galactus

    Is it a right triangle?

    If so, the area is given by



    where b=base length, h=height, A=area.



    Plug in A and b.
  • May 14, 2010, 10:07 PM
    InfoJunkie4Life

    From what I remember all triangles can follow the 1/2bh rule for area. But that refers to the perpendicular height, not the length of another side.

    Say you have a triangle with a b of 6 and an area of 24:





  • May 17, 2010, 09:11 AM
    imsurroundedbyfish

    Wow, there's no 2nd or 3rd page any more
  • May 17, 2010, 09:14 AM
    Curlyben
    Nope cleaned up ;)
    So you can get back to the question in hand.

    The site looks the same in the UK as it does all over the world, this being the internet there are NO countries.
  • May 17, 2010, 09:19 AM
    ballengerb1

    Curlyben stepped in to this thread to figure out what's happened. He just cleaned things up but , from what he said, your screen looks just like ours.
  • May 17, 2010, 09:22 AM
    imsurroundedbyfish

    But anyway I have the info I wanted now so thank you for your time sorry for the inconvenience
    :)

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