Mathematics

Mathematics

Problem

Which of the following expressions gives the area Δ\Delta of a triangle whose sides are aa, bb and cc, when s=a+b+c2s=\dfrac{a+b+c}{2}? a) 2s(s−a)(s−b)(s−c)2\sqrt{s(s-a)(s-b)(s-c)} b) (a+b+c)(s−a)(s−b)(s−c)\sqrt{(a+b+c)(s-a)(s-b)(s-c)} c) s(s−a)(s−b)(s−c)\sqrt{s(s-a)(s-b)(s-c)} d) 12s(s−a)(s−b)(s−c)\dfrac{1}{2}\sqrt{s(s-a)(s-b)(s-c)}

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