[tex]\text{The formula of the volume of a sphere with a radius R:}\\\\V=\dfrac{4}{3}\pi R^3\\\\\text{We have:}\\\\r=12.3\\\pi\approx3.14\\\\\text{substitute:}\\\\V=\dfrac{4}{3}\cdot3.13\cdot12.3^3\approx7795\ m^3\\\\\text{Answer:}\ A.\ 7,795\ m^3[/tex]
