A pipe of 2 inch diameter fills a water tank in one hour . If the diameter of the pipe is 4 inch in what time will the pipe fill the same tank?

A pipe of 2 inch diameter fills a water tank in one hour . If the diameter of the pipe is 4 inch in what time will the pipe fill the same tank? Correct Answer 15 minutes

Diameter দিয়ে বৃত্তের Area equation = πd24 যদি diameter double হয়, তবে Area বর্গ আকাড়ে বাড়ে। so time = 60min4 = 15 min
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