A bevel gear has pitch circle diameters of pinion and gear as 20 mm and 40 mm respectively. What is the face width of bevel gear? (m =module)

A bevel gear has pitch circle diameters of pinion and gear as 20 mm an

1.	A bevel gear has pitch circle diameters of pinion and gear as 20 mm and 40 mm respectively. What is the face width of bevel gear? (m =module)
A.	17.5 m
B.	10 m
C.	7.45 m
D.	3.16 m
Answer» D. 3.16 m