A simply supported beam has a uniformly distributed load applied. The length of the beam, L $=4\mathrm{.}50$ m$,$ the cross$-$section of the beam is semi$-$circular and the radius of the cross$-$section, r $=200\mathrm{.}0$ mm and the intensity of the load w $=23\mathrm{.}5$ kN $/$ m$.$

Determine the absolute maximum tensile stress in the beam.

Enter your answer as a positive value using the units of MPa, to a precision of two decimal places.