问题描述：
AP物理suppose we are asked to find volume of a solid whose base is the circle
suppose we are asked to find volume of a solid whose base is the circle x^2+y^2=4,and where cross-sections perpendicular to the x-axis are all square whose sides lie on the base of the circle.how would we find the volume?
suppose we are asked to find volume of a solid whose base is the circle x^2+y^2=4,and where cross-sections perpendicular to the x-axis are all square whose sides lie on the base of the circle.how would we find the volume?
问题解答：
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