In passage 2, review pages 2 and 3. click or tap the ONE underlined sentence on these pages that reveals Anna's mistake.

Idon’t understand your question, can you clear it up?

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.   

Post the graph so people can answer