1. The problem statement, all variables and given/known data Find lx and ly. 3. The attempt at a solution So after countless studying of this topic, and no notes from my professor to help, I thought I had the process figured out. But this initial image is throwing me off a bit. Here's what I believe to be the right process for these problems (please correct me if I'm wrong) 1) First, divide the object into portions. Find the area of each portion. 2) Next, find the x centroid of each portion, which is done by halving the width of each portion. 3) Next, find the y centroid of each portion, which is done halving the height, and adding any additional height that is below the portion. 4) Next, you multiply the area of each portion by it's x and y centroid distances. 5) Next, sum up the total area, the total (x centroid * area), and total (y centroid * area) 6) Next, figure out the X and Y centroids for the total object by dividing the summed up (x centroid * area) and (y centroid * area) respectively by the total area. 7) Now you can figure out the moment of inertia x of each portion with the specific shape formula needed (for example a rectangle being [(1/12)*b*h^3]) and then adding to it (area)*(total Y centroid - the portions Y centroid). Or I guess you just subtract whichever is smaller between the total Y centroid and portion's Y centroid. 8) For the moment of inertia y, it's the same thing except the second part of the formula would be (area)*(total X centroid - the portions X centroid). 9) At this point, you can add up the inertia parts and get the total inertia for X and Y. Is this process correct? I'm a bit suspicious that it's not since I didn't need to use any calculus (I could've sworn this chapter was all about calculus). But anyways, back to my main point. In this particular problem I can't actually get this process started, since they don't give all of the dimensions or any angles to figure them out. I'm also not totally sure what geometric techniques I can use on a semicircle. What is the first step here? Thanks in advance for any help.