Question
What is the area of a triangle whose sides are 13 cm, 14
cm and 15 cm?Solution
ATQ, Using Heron's formula: s = (13 + 14 + 15)/2 = 42/2 = 21 Area = √[s(s-a)(s-b)(s-c)] = √[21 x 8 x 7 x 6] = √[7056] = 84 sq cm
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