Question

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

Answer 1

hello mate...

Answer...-

Diameter = 7 m

Radius = 7/2 m

Height = 20

Earth dug out from well (cylindrical) and From platform (cuboidal shape)

volume of cuboid = length × breath × Height ( l × b × h )

length = 22 m

breath = 14 m

height = ?

πr^2h = area of platform × height of platform

= 22/7 × (7/2)^2 × 20 = 22 × 14 × h

h = 22/7 × 49/4 × 20/22×14

h = 5/2 = 2.5 m

Hence, the height of such a platform will be 2.5 m