Question

a a well 2 metre in in radius and 14 metre deep is to be dug find the cost of digging the well at rupees 1.20 per meter cube

Answer 1

The volume of the well is:

`V=14\cdot2^2\cdot\pi=175.92\approx176m^3`

so the cost of digging the well is:

`1.2\cdot176=211.2`

211.2 rupees