A 40m deep deep well with diameter 7m is dug and the earth from digging is spread to form a platform 22m by 14m. Find the height of the platform
Answers
Answered by
9
Volume of the Earth taken out of the well = volume of a cylinder of radius 7/2 m and height 40 m
= 22/7×(7/2)²× 40 m³
=1540 m³
Let the raised height of 22m by 14m platform be equal to 'h' metres. Then,
Volume of earth in platform = volume of earth taken out of the well
⇒ 22×14×h = 1540
⇒ h = 1540/22×14
⇒ h = 5 m.
= 22/7×(7/2)²× 40 m³
=1540 m³
Let the raised height of 22m by 14m platform be equal to 'h' metres. Then,
Volume of earth in platform = volume of earth taken out of the well
⇒ 22×14×h = 1540
⇒ h = 1540/22×14
⇒ h = 5 m.
Similar questions