While cooling, a cubical casting of side 40 mm undergoes 3%, 4% and 5% volume shrinkage during the liquid state, phase transition and solid state, respectively. The volume of metal compensated from the riser is

While cooling, a cubical casting of side 40 mm undergoes 3%, 4% and 5%

1.	While cooling, a cubical casting of side 40 mm undergoes 3%, 4% and 5% volume shrinkage during the liquid state, phase transition and solid state, respectively. The volume of metal compensated from the riser is
A.	2%
B.	7%
C.	8%
D.	9%
Answer» C. 8%