How far away does the tabletop appear tobe to the observer

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A glass sphere has radius R = 6.4 cm and index ofrefraction 1.7. A paperweight is constructed by slicing through thesphere along a plane that is 2.0 cm from the center of the sphere,leaving height h = 4.4 cm. The paperweight is placed on atable and viewed from directly above by an observer who is distanced = 11 cm from the tabletop (figure below). When viewed through the paperweight, how far away does the tabletop appear tobe to the observer?

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