A globe has a diameter of 22 in. What is the best approximation for the volume of this globe? 14,197.33 in³5572.45 in³1774.67 in³379.94 in³

Sphere Volume   =   ( π   • d³) / 6
Sphere Volume = (3.14159265 * 22^3 / 6)

Sphere Volume = 5,575.2797

It seems they used PI = 3.14 because then the answer is:
5,572.45