V = 18 * pi * (d/2) ^ 2
V = 9 * pi * (d/2) ^ 2 * h
h = 18/9 = 2
H=h/(3*3)=18 : 9 = 2 см уровень жидкости
V = 18 * pi * (d/2) ^ 2
V = 9 * pi * (d/2) ^ 2 * h
h = 18/9 = 2
H=h/(3*3)=18 : 9 = 2 см уровень жидкости