SOLUTION: I have an equilateral triangle with side = x. The area is 5000 sq metres Need a formula to work out x. Thanks

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Question 596626: I have an equilateral triangle with side = x. The area is 5000 sq metres
Need a formula to work out x.
Thanks
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
the altitude of an equilateral triangle divides the triangle into two 30-60-90 right triangles
___ if the side is s, then the height is (s√3)/2

so, in this case ___ A = (1/2)bh ___ 5000 = (1/2)x[(x√3)/2]