The volume of a sphere is given by the formula
Volume = 4/3 * pi * r^3
where r is the radius of the sphere.
The radius of the first sphere is 2 mm, so its volume is
4/3 * pi * 2^3 = 33.51 mm^3
The radius of the second sphere is 298 mm, so its volume is
4/3 * pi * 298^3 = 4,047,000 mm^3
The ratio of the volumes of the two spheres is
4,047,000 mm^3 / 33.51 mm^3 = 121,360