3. (a) Find the coordinates of the centroid of the shaded area with respect to the axes shown in Figure 4. 80 60 400- 40

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3 A Find The Coordinates Of The Centroid Of The Shaded Area With Respect To The Axes Shown In Figure 4 80 60 400 40 1 (42.12 KiB) Viewed 27 times

3. (a) Find the coordinates of the centroid of the shaded area with respect to the axes shown in Figure 4. 80 60 400- 40 -60 80 Figure 4 (All dimensions in mm) 2 (b) The cross-section of a plain concrete culvert is as shown in Figure 5. Determine the moment of inertia about the horizontal centroidal axes. -1000- R=80 r = 650 400- 1000 Figure 5 (All dimensions in mm)