Answer:
Step-by-step explanation:
Using equation of pure torsion

where
T is the applied Torque
is polar moment of inertia of the shaft
t is the shear stress at a distance r from the center
r is distance from center
For a shaft with
Outer Diameter
Inner Diameter

Applying values in the above equation we get
x

Thus from the equation of torsion we get

Applying values we get

T =829.97Nm