For a class I am currently taking we are asked to do only the 2D drawing of the review after each tutorial. I am having trouble with the review for tutorial 3 and 4 in this book. How should I go about, for review #3, making the top 1 inch radius arc that joints the 3 inch radius arc on both sides and then becomes a .5 radius fillet with 4 inch radius arc on both sides? The measurements in the book are very crowded and are not easy to read, so I don't have a clear idea of how to even start that part. Also in tutorial 4 the angle of the small slots is unclear and to make them seems challenging since they go from a rounded end to two fillets and then slope down. How would I go about creating these as well? The pictures are the two reviews. I am looking for videos on how to do them but I can't seem to find any.