Arithmetic Ability
Area

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Q.

Find the area of a triangle whose sides measure 13 cm, 14 cm and 15 cm.

View Answer

Correct choice: A

Explanation:

Let a = 13, b = 14 and c = 15. Then, s=12(a+b+c) =21 (s- a) = 8, (s - b) = 7 and (s - c) = 6. Area =[s(s−a)(s−b)(s−c)]−−−−−−−−−−−−−−−−−−−√ =(21×8×7×6)−−−−−−−−−−−−−√ = 84 sq.cm
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