A metallic strip having a thickness of 12 mm is to be rolled using two steel rolls, each of 800 mm diameter. It is assumed that there is no change in the width of the strip during rolling. In order to achieve 10% reduction in the cross-sectional area of the strip after rolling, the angle subtended (in degrees) by the deformation zone at the center of the roll is

A metallic strip having a thickness of 12 mm is to be rolled using two

1.	A metallic strip having a thickness of 12 mm is to be rolled using two steel rolls, each of 800 mm diameter. It is assumed that there is no change in the width of the strip during rolling. In order to achieve 10% reduction in the cross-sectional area of the strip after rolling, the angle subtended (in degrees) by the deformation zone at the center of the roll is
A.	1.84
B.	3.14
C.	6.84
D.	8.23
Answer» C. 6.84