The solid lies between planes perpendicular to the x -axis at x = -1 and x = 1. The cross sections perpendicular to the x - axis between these planes are squares whose bases run from the semicircle y = - √1-x² to the semicircle y = √1-x².
The solid lies between planes perpendicular to the x -axis at x = -1 and x = 1. The cross sections perpendicular to the x - axis between these planes are squares whose bases run from the semicircle y = - √1-x² to the semicircle y = √1-x².