Fill in the blank :
A circular well with a diameter of 2 metres is dug to a depth of 14 metres. What is the volume of the earth dug out?
How many cubic metres of earth must be dug out to sink a well which is 20 m deep and has a diameter of 7 metres? If the earth so dug out is spread over a rectangular plot 28 m by 11 m, what is the height of the platform so formed?
A circular well with a diameter of 2 metres,is dug to a depth of 14 metres. What is the volume of the earth dug out?
(a) 32 m3
(b) 36 m3
(c) 40 m3
(d) 44 m3