The cost of levelling the ground in the form of a triangle having the sides 51 m, 37 m and 20 m at the rate of Rs 3 per m2 is
A
Rs. 918
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B
Rs. 818
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C
Rs. 718
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D
Rs. 618
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Solution
The correct option is CRs. 918 s=51+37+202=1082=54 Area of the triangle=√54(54−51)(54−37)(54−20) =√54(3)(17)(34)=√93636 Area =306m2. Cost of levelling at Rs.3 per m2=306(3)=Rs. 918