Lissafi da girma na ruwa a cikin wani rectangular ganga
Saka da girma na cikin millimeters
X - da nisa daga cikin ganga
Y - da tsawo daga cikin akwati
L - da tsawon da ganga
H - m matakin
Shirin zai lissafi da girma na ruwa a cikin wani rectangular jirgin ruwa, jimlar da free girma, surface yankin.