Question

a well of inner diameter 14m is dug to a depth has been spread all around it to a width of 7 m to from an em mbankment .find the height of the embankment so formed

​

Answer 1

Answer:

Step-by-step explanation:

Let height of embankment be  

′

h  

′

 meter. Then

Volume of embankment = Volume of earth taken out from the well

⇒π(R  

2

−r  

2

)h=πr  

2

H

⇒((7+7)  

2

−7  

2

)×h=7  

2

×12

⇒(196−49)×h=49×12⇒h=  

147

49×12

​  

=4m

∴  Height of embankment =4m.