Question

A 16metre deep well with diameter 3.5 metre is dug up and the earth from it spread evenly to form a platform 27.5 by 7 metre find the height of the platform​.

Answer 1

Answer:

Step-by-step explanation:

Let as assume well is a solid right circular cylinder Radius of cylinder (r)=3.5/2 = 1.75m Height (or) depth of well = 16m. Given that length of platform (l) = 27.5m Breath of platform (b) = 7 cm  Let height of platform be x m Since well is spread evenly to form platform So equating (1) and (2) Read more on Sarthaks.com - https://www.sarthaks.com/105890/16m-deep-well-with-diameter-dug-and-the-earth-from-spread-evenly-to-form-platform-27-5m-by-7m

Answer 2

Answer:

$\pi (3.5 \div 2) ^2 \times 16 = 27.5 \times 7 \times x$

solving x we get 0.8