Question

how many cubic metre of earth must be dug out to sink a well which is 30 M Deep and has a diameter of 10.5 metres.​

Answer 1

Answer:

2598.75 cubic metre

Step-by-step explanation:

1. its a cylinderical shape , so, volume of cylinder is πr sqare×height
2. so radius is 5.25 metre

22÷7×5.25×5.25×30

3. that gives 2598.75 cubic m