acreage in a triangle

[cmackie]

If I have a plot of land with THREE equal sides, what will be my footage on each side?

[Guest]

For any triangle with sides a, b, and c

Let s = (a + b + c)/2

Then area A = SQRT(s*(s-a)*(s-b)*(s-c))
(Heron's formula)

For the special case a = b = c,
this reduces (a²/4)*SQRT(3) or about 0.433*a² where a is one of the equal sides.

[Guest]

If I have a plot of land with THREE equal sides, what will be my footage on each side?

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