Geometrymedium · Past Paper
Calculate the area of a triangle whose sides are 13 cm, 14 cm, and 15 cm using Heron's formula.
A42 sq. cm
B84 sq. cm
C96 sq. cm
D105 sq. cm
✓ Correct Answer: B — 84 sq. cm
s = (13+14+15)/2 = 21. Area = sqrt(21*8*7*6) = sqrt(7056) = 84 sq. cm.
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