I need study guides for 9th grade in the usa

I’m not sure if you’re talking about US history but if so try searching 9th grade US history final study guide. That has helped me a lot.

True is the answer. hthhth

See diagram.we use washers to get the area and we will be integrating with respect to xouter radius is the  distance between y = e^x and y = -1    inner radius of washer is the distance between y = 1 and y = -1    the area of one cross-section of a washer is    solid lies between x = 0 and x = 2. the volume is    if you need this expanded, then    the question doesn't say to evaluate, so we're done.