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Posted by on Monday, September 12, 2011 at 10:47am.

I have a triangle that is 33' X 33' X 33' X 6" deep.
How may cubic yards is this?

  • Math - , Monday, September 12, 2011 at 11:07am

    Area of an equilateral triangle is

    l^2 Sqrt3/4

    where l = length of a side.

    convert figures to yards

    11x11x11x1/6

    area is then

    11^2 x sqrt3/4 = 52.4 sq yards

    volume = 52.4/6 = 8.73 cu yards

    Please check my maths and remember to include the untis with your answer.

  • Math - , Monday, September 12, 2011 at 11:09am

    Another need way to find the area of any triangle is Heron's formula, you can memorize it easy enough, so you can find the area of any triangle knowing the sides.

    http://mste.illinois.edu/dildine/heron/triarea.html

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