Subject Category > Economics

Q. Find out the area of a triangle whose sides are 50m., 78m., and 112m.?

A) 156 sq.m

B) 159 sq.m

C) 1680 sq.m

D) 224 sq.m

1680 sq.m

Additional Information > Exam point of View

Using Heron's formula, s = (50 + 78 + 112) / 2 = 120. Area = √[s(s-a)(s-b)(s-c)] = √[120(120-50)(120-78)(120-112)] = √[120 × 70 × 42 × 8] = 1440 m².

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