Question

the volume of earth taken out on digging a cylindrical well is 1540m^3 find the depth of the tank if its base is radius is 350 cm.



the answer is 40 m I need the method

please send me fast !!!!!!!!​

Answer 1

πr^2h = 1540

22/7×3.5/3.5×h= 1540

0.5× 3.5× H = 70

1/2×7/2× h = 70

1/2× 1/2×h = 10

h = 2×2×10

h = 40m