Final answer:
The diameter of sphere S is 1.5 mm, calculated by doubling the given radius of 0.750 mm.
Step-by-step explanation:
The question asks about the diameter of a sphere when the radius is given. The diameter of a sphere (d) is simply twice the length of its radius (r). As the provided radius of sphere S is 0.750 mm, to find the diameter, we multiply the radius by 2:
d = 2 × r = 2 × 0.750 mm = 1.5 mm.
Therefore, the diameter of sphere S is 1.5 mm.