Actually, it's trivial to do in your head. 100 * 100 cubic centimeters of water = 10 liters. Times pi/4 to correct for the circular cross section, so approx. 8

Actually, it's trivial to do in your head. 100 * 100 cubic centimeters of water = 10 liters. Times pi/4 to correct for the circular cross section, so approx. 8 liters.