Extracted text: HW: 9-2-10 Using the method of composite areas, find the moment of inertia about the centroidal y axis. The thickness of all three parts is 15mm. Be sure to indicate each part number in the picture below. www.class4me.com/coursedata/statics/Formulas.pdf 160mm 80mm y =115mm Answer(s): ly = 7.33E6 mm^4 210mm 60mm 120mm