The concrete T-beam has the following dimensions: b = 600mm, bw = 300mm, d = 500mm and tr = 80mm. It is subjected to a bending moment of 100 kN-m. Use fc' = 21MPa, fs=165MPa and n=9. It has a tensile reinforcement of 3-32mm. 80 mm a. 5.20 MPa 600 mm b. 2.66 MPa 3-32mm 300 mm Determine the cracked moment of inertia in mm using Transformed Section Method. a. 3,273.56 x 106 b. 4,372.66 x 106 c. 5,492.34 x 106 d. 2,268.85 x 106 Determine the concrete stress at the bottom of the flange using Transformed Section Method. d. 3.20 MPa 500 mm c. 4.50 MPa