the function v (r) can be used to find the volume of air inside a basketball given it radius what does v (r) represnet

The notation V (r) actually gives the volume of air inside the basketball. V (r) is volume as a function of radius, r It can be written as: V (r) = 4/3πr³ So, for any value of r, we can get the volume V. For, example, when r = 7cm we can say; V (7) = 4/3 x 22/7 x 7³ = 1437.33 cm³