Question

The water is filled inside a cylindrical tank at a rate of
20 litres per minute. Now, the tank is filled in 20
minutes. Find the height of the tank if its radius is 'r'
m.​

Answer 1

Answer:

Step-by-step explanation:

Now we know that speed of water is 20litres per minute.

= 20,000 cm/60 sec

Also the tank is filled in 20min

So, area of tank= 20000cm cube x 20

=400000cm cube.

To find we height, we use the formula of cylinder area.

Pi x r^2 x h

22/7 x r x h.

So h= 400000 x 7r/22

Answer 2

Answer is 4lakhsx7r/22