1a. You are missing a very important part of this integral set up to find the total distance. 1c. You will want to use the average value of a function integral to find this answer. 2b. You have an error with your final answer here. 3b. You are correct to set the expression equal to 9/2, however your integral set up is not accurate. 4a. You will want to use the Washer method set up here because there is an infinitesimal hole at the origin. 4b. Your correction to part a will affect this answer as well. 5b: Your limits of integration are not accurate. In addition, pi/2 times 0.283374 does not equal 0.4951. What happened to the pie in your integral set up? Also, the set up of the radius equal to f{x) - g(x) is not accurate. Please give this one another try. 1. For 0