A round billet made of 70-30 brass is extruded at a temperature of 675°C. The billet diameter is 125 mm, and the diameter of the extrusion is 50 mm. Calculate the extrusion force required.

A round billet made of 70-30 brass is extruded at a temperature of 675

1.	A round billet made of 70-30 brass is extruded at a temperature of 675°C. The billet diameter is 125 mm, and the diameter of the extrusion is 50 mm. Calculate the extrusion force required.
A.	4 mn
B.	5 mn
C.	5.6 mn
D.	none of the mentioned
Answer» D. none of the mentioned