Question

A small child rank fell in 20m deep pit the army rescue team decides to dig a cylindrical hole of 2m in diameter and 21m deep, slightly away from the pit and then connect the pit and hole by another cylindrical hole of 1m in diameter and 3.5m in length.Find in cubic meter how much earth will have to be removed and the cost of rescue operation at the rate is rs 10,000 per cubic meter.

Answer 1

Check it is right or wrong. I am not sure so pls check