The relative density, ρ of a body is given by:

$\overline{){\mathbf{\rho}}{\mathbf{=}}\frac{{\mathbf{\rho}}_{\mathbf{a}\mathbf{i}\mathbf{r}}}{{\mathbf{\rho}}_{\mathbf{a}\mathbf{i}\mathbf{r}}\mathbf{-}{\mathbf{\rho}}_{\mathbf{w}\mathbf{a}\mathbf{t}\mathbf{e}\mathbf{r}}}}$

Density in terms of volume, V:

$\overline{){\mathbf{\rho}}{\mathbf{=}}\frac{\mathbf{m}}{\mathbf{V}}}$

The density of a human body can be calculated from its weight in air, *W _{air}*, and its weight while submersed in water,

A. W_{air}/(W_{air} – W_{w}).

B. (W_{air} – W_{w})/W_{air}_{.}

C. (W_{air} – W_{w})/W_{w}.

D. W_{w}/(W_{air} – W_{w}).

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