Question

A 20 m deep well with diameter 7m is Dug and the earth from digging is evenly spread out to form a platform 22m by 14m. find the height of the platform.

Answer 1

Answer:

Step-by-step explanation:

In this case

Volume of the well = Volume of the platform so formed

Well:

Diameter of the well = 7m= d

Radius of the well = 7/2m=r

Height of the well = 20m=h

Platform:

Length of the platform = 22m=L

Breadth of the platform = 14m=B

Height of the platform= H

Volume of the well = Volume of the platform

πr^2h = L×B×H

22/7×7/2×7/2×20 = 22×14×H

11×7×10 = 22×14×H

H = (11×7×10)/(22×14)

H = 10/(2×2)

H = 5/2

H = 2.5 m

Height of the platform formed = 2.5m

Hope this helps you

Answer 2

I hope you got it answer is 2.5 cm