The volume of a sphere is given by the formula $\frac{4}{3}\pi r^3$. The radius of the proton is given as $1.0 \, \text{fm}$, which is $1.0 \times 10^{-15} \, \text{m}$. Substituting this into the formula gives us the volume of the proton:
\[V_{\text{nucleus}} =
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