A pipe that is twist$-$restrained at both ends has an inside radius ri$=11$ mm and an outside radius ro$=20$ mm$.$ The pipe is subjected to a torque loading along its length in such a way that if the right end is allowed to twist, the angle of twist would be

$=0\mathrm{.}0005$ rad. If the pipe is $0\mathrm{.}94$ m$.$ long and has a shear modulus G$=79$ GPa, what is the torque reaction at the end of the pipe? Express your answer in kN$.$m using two $(2)$ digits after the decimal point.