alleryFind the area of a triangle whose sides are 13 cm, 14 cm and 15 cm.
A84 cm²
B105 cm²
C91 cm²
D168 cm²
Answer & Solution
Correct answer: A. 84 cm²
The semi-perimeter is 21, so the area is √(21 × 8 × 7 × 6) = √7056 = 84 cm².
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