Question

A circular well of radius 4.9m is dug 20m deep and the earth so dug is
spread over a rectangular plot of length 14m and breadth 11m. Find the
height of the platform so formed.​

Answer 1

Step-by-step explanation:

Volume of earth dugout=pi*r*r*depth=769.69m^3

Volume of rectangular plot =length *breadth*height=14*11*h

Since the dugout soil is spread on the rectangular plot the volume of plot is equal to volume of soil dugout

769.96=14*11*h

h=4.997988m