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a cylindrical cistern, constructed below ground level, is 3 m in diameter and 2.2 m deep and is filled to the brim with a liquid whose index of refraction is 1.66. a small object rests on the bottom of the cistern at its center. 2.2 m 1.2 m 3 m x how far x from the edge of the cistern can a girl whose eyes are 1.2 m from the ground stand and still see the object? answer in units of m.