1 ft =12 in
4 in = 0.333 ft
volume = (п/4)*(0.333)² = 0.087 ft²
vol. flow = spead *volume
=3 ft/s * 0.087 ft²
vol flow = 0.261 ft³/s
Its actually C. I did the question on USA test prep and it said the correct answer was C.
Gravity
The moon doesn't smash into the earth because the gravity from the earth keeps the moon in orbit around it.
