To find volume $ V $ use formula:
$$ V = \dfrac{ 4 \cdot r^2 \cdot \pi}{ 3 } $$After substituting $ r = 41.8 $ we have:
$$ V = \dfrac{ 4 \cdot 41.8^2 \cdot \pi}{ 3 } $$ $$ V = \dfrac{ 4 \cdot 1747.24 \cdot \pi}{ 3 }$$ $$ V = \dfrac{ 6988.96 \cdot \pi}{ 3 }$$ $$ V = 2329.6533 \cdot \pi $$