' evaluate the area of a triangle' given its three sidesFunction TriangleArea(side1 As Double, side2 As Double, _ side3 As Double) As Double ' this function uses the Heron formula Dim halfP As Double ' evaluate half of the perimeter halfP = (side1 + side2 + side3) / 2 TriangleArea = Sqr(halfP * (halfP - side1) * (halfP - side2) * (halfP - _ side3))End Function
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