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A solid sphere made of a composite material is floating in water with 53.0 % of...

A solid sphere made of a composite material is floating in water with 53.0 % of its volume above water. Note that the water density is 1.00 g/cm3, and the density of rubbing alcohol is 0.786 g/cm3.
(a) The density of the composite material is  g/cm3.
(b) If we put this sphere in rubbing alcohol, it will have  % of its volume above the alcohol surface.

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