Question

how many cube meter of earth must to be dug out to sink a well 14m in depth and having a radius of 4m if the earth taken cut a speard over a plat of dinosion (25m×16m ) what is the filling
height of the plateform so formed

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Answer 1

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r=4m and h=14m.

Volume of the earth dug out of the well

=> (πr²h) cubic units = (22/7×4×4×14)m³

=> 704m³

Area of the plot =(25×16)m²=400m²

Volume of the platform =volume of the earth dug out  

=> 704m³

Hence, the hight of the platform so formed =1.76m