Question

Diameter of a cylindrical tank is 7 m.If 385 m3 water is fill in the tank.What

will be the height of water in tank ? (Take π=22/7).​

Answer 1

Answer:

We have

Volume of water that flows per hour =(192.50×60)litres=(192.50×60×1000)cm

3

.....(i)

Inner diameter of the pipe =7cm

Inner radius of the pipe =

2

7

cm=3.5cm

Let h cm be the length of the column of water that flows in one hour

Clearly, water column forms a cylinder of radius 3.5cm and length h cm

Volume of water that flows in one hour = volume of the cylinder of radius 3.5cm and length h cm

=(

7

22

×(3.5)

2

×h)cm

3

.....(volume of cylinder=πr

2

h)

From (i) and (ii) we have

7

22

×(3.5)

2

×h=192.50×60×1000

⇒h=

22×3.5×3.5

192.50×60×1000×7

cm=3km/hr

Answer 2

Answer:

• Given:- Diameter of a cylindrical tank is 7 m.
• Volume of tank:-385 m*3
• volume of cylinder =πr*2 h

22/7 × 7/2× h= 385

11 h= 385

h = 385/11

h=35m