Question

A 20 m. deep well with diameter 7m is dug up and the earth from digging is spread evenly to form a platform 22m x 14m.
Determine the height of the platform,​

Answer 1

Answer:

Okk plz follow karo ar answer प्राप्त करे धन्यवाद

Step-by-step explanation:

जय श्री राम

Answer 2

Answer:

Height of platform = 2.5 m

Step-by-step explanation:

The shape of well will be cylindrical.

Depth (h) of well = 20m

Radius (r) of circular end of well =  7/2 = 3.5m

Area of platform = length x width= 22 x 14 m2

pie x 3.5(2) x h = 3.14 x 3.5 (2) x 20 = 770

22 x 14 = 308m2

770/308 = 2.5

Hope this helps!!