calc volumes

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the basse of a solid S is the region enclosed by the graph of y=square root (ln x), the line x=e, and the x-axis. if the cross sections of S perpendicular to the x-axis are squares, then the volume of S is.

how do i find the side of the squares.

because i got square root(lnx) and squared it because Area of square is s^2.

then on my integrals, i would integrate it from 1 to e because that is the boundary. then what?

is what i am doing correct. i went to websites and looked in my book but i still am having trouble

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