Question

find the cost of digging a cuboidal pit of dimensions 8 metre into 7.5 metre into 7 at the rate of rupees 25 per metre cube

Answer 1

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l=8 m, b=6 m, h=3 m

Volume =l×b×h=(8×6×2)m

3

=144m

3

Cost of digging per m

3

volume =Rs.30

Cost of digging per 144m

3

volume =Rs.144×30

= Rs. 4320