প্রশ্ন সংশোধন করুন
প্রশ্ন:
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?