Question

Water is flowing at the rate of 15 km/h through a pipe of diameter 14 cm into a cuboidal

pond which is 50 m long and 44 m wide. In what time will the level of water in the pond

rise by 21 cm ?

can you please answer quick​

Answer 1

Answer:

Let the level of water in the pond rises by 21 cm in t hours.

Speed of water = 15 km/hr

Diameter of the pipe = 14/100 m

Radius of the pipe (r) = 7/100 m

Volume of water flowing out of the pipe in 1 hour

= π r 2 h

= (22/7) x (7/100) x (7/100) x 15000

= 231 m3

Volume of water flowing out of the pipe in t hours = 231 t m3.

Volume of water in the cuboidal pond

= 50 x 44 x (21/100)

= 462 m3  

Volume of water flowing out of the pipe in t hours = Volume of water in the cuboidal pond

So, 231 t = 462

t = 2

Thus, the required time is 2 hours.

Step-by-step explanation:

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Answer 2

Answer:

120 min. or 2 hours

l hope you help me