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Q.

A farmer connects a pipe of internal diameter 20cm from a canal into a cylindrical tank in her field, which is 10m in diameter and 2m deep. If water flows through the pipe at the rate of 3km/hr, in how much time will the tank be filled?


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a

2hr

b

5hr

c

1.67hr

d

2.30hr 

answer is C.

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Detailed Solution

Volume of pipe = volume of tank
⇒πr2h=πR2H
⇒101002×h=52×2
⇒h100×50
⇒h=5000 m=5 km
Question ImageHence, Option (3) is the correct answer.
 
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