圓柱體體積 = pi * r^2 * h

原始體積

A = pi * ra^2 * h
B = pi * rb^2 * 4h
C = pi * rc^2 * h

鐵球體積D = 4/3*pi*rd^3
(假設半徑rd)

A'的體積 = A + D
B'的體積 = B + D
C'的體積 = C + D

液體總高度

hA' = A' / (pi*ra*2) = (A+D) / (pi*ra*2)
hB' = B' / (pi*rb*2) = (B+D) / (pi*rb*2)
hC' = C' / (pi*rc*2) = (C+D) / (pi*rc*2)

上升高度

A_up = D / (pi*ra*2) = a
B_up = D / (pi*rb*2) = a
C_up = D / (pi*rc*2) = 1/4a

體積與上升高度成反比關係