So, it looks like we got the volume of a sphere. We know that the formula for it when we got the diameter is, [tex]V=\frac{\pi d^3}{6}[/tex] We are going to use 3.14 for [tex] \pi [/tex] [tex]V=\frac{3.14* d^3}{6}[/tex] Let's plug in the values, [tex]V=\frac{3.14*10^3}{6}[/tex] Simplify, [tex]V=\frac{500*3.14 }{3}[/tex] Our volume of the beach ball is, V ≈ 523.333333333 Round to the nearest tenth. V ≈ 523.3 in³ Thanks! -TetraFish