Volume of sphere: V = (4/3)π r³
Radius = 8.4
π = 3.14
V = 4/3 * 3.14 * 8.4³
V = 4/3 * 3.14 * 592.704
V = 4/3 * 1,861.09056
V = 2481.45408
round to nearest tenth
V = 2481.5