The cost of levelling the ground in the form of a triangle having side 51 m , 37 m and 20 m at the rate of Rs.3 per m square is Rs. 918 . Is this statement is true ?
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Foremost, find semiperimeter=(51+37+20)÷2=54
Cost of levelling =rate × area of triangular land
=> cost = √[54×(54-51)(54-37)(54-20)] × 3
= √[54×(3)(17)(34)] × 3
= √[3 ×2×9 ×3 ×17×2×17] × 3
=3×2×3×17 × 3 = rs 918
Hence, cost of levelling =Rs 918
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