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SSC CHSL 2021 PYQ — Question 61

SSC CHSL - 4 Aug 2021 - Shift 3 • Quantitative Aptitude • Q61

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What is the cost (in Rs.) of levelling a triangular park with sides 60 m, 112 m and 164 m at the rate of Rs.10.50 per m2 ?

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Correct answer: B

Explanation

The correct answer is option 2 i.e. 21,168.

S = (a + b + c)/ = (60 + 112 + 164)/2 = 168

Area = s(s−a)(s−b)(s−c)\sqrt {s(s-a)(s-b)(s-c)}

A = 168(168−60)(168−112)(168−164)\sqrt {168(168-60)(168-112)(168-164)}

A = 2016

The cost (in Rs.) of levelling a triangular park = 2016 × 10.50 = 21,168