RRB NTPC 2025 · Question 220 of 409

Water flows through a cylindrical pipe of internal diameter 21 cm at the rate of 8 m/s. What time, in minutes, would the pipe take to fill an empty rectangular tank of dimensions 12 m x 9 m x 4.41 m? (Rounded up to one decimal place) (Use pi = 22/7)

1. A28.6 minutesCorrect
2. B30 minutes
3. C36.8 minutes
4. D27.5 minutes