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Question

Find the cost of digging a cuboidal pit 8 m long, 6 m broad and 3 m deep at the rate of 30 per m3.

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Solution

l=8 m, b=6 m, h=3 m
Volume =l×b×h=(8×6×2)m3=144m3
Cost of digging per m3 volume =Rs.30
Cost of digging per 144m3 volume =Rs.144×30
= Rs. 4320

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