3a. The bending moment diagram of a beam is shown in Figure Q3a, while a cross-section of the beam is shown in Figure Q3b. Point C is the centroid of the cross-section while the value of the moment of inertia to the neutral axis is as shown. Determine the maximum tensile and compressive stress of the entire beam. kNm 198 m 252 FIGURE Q3a 240 lengths are in mm =234 90 INA= 690780000 mm FIGURE Q3b 09