To calculate the density of a woman who floats in freshwater with 4.00% of her volume above the surface, we need to know her mass. ;
Your friend's approximate volume is 0.15 m³, calculated using her mass and the density of fresh water. This solution applies the concepts of density and buoyancy. Since she just barely floats, her density matches that of the fresh water, which is about 1000 kg/m³.
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