Question
A triangle has sides 13, 14, 15. Find its
area.Solution
ATQ, By Applying (Heron's formula) s = (13 + 14 + 15)/2 = 21 Area = √[21(21–13)(21–14)(21–15)] = √[21 × 8 × 7 × 6] = √(7056) = 84 Answer: 84 square units
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