A spherical balloon is being inflated and the radius of the balloon is increasing at a rate of 10 cm/s. (a) Express the radius r of the balloon as a function of the time t (in seconds). r(t) (b) If V is the volume of the balloon as a function of the radius, find V. or. (Vor) (t) = Interpret the answer found in part (b). O This formula gives the amount of time (in seconds) the balloon has been inflating as a function of V. O This formula gives the volume of the balloon (in cms) as a function of time (in seconds). Need Help? Read It Watch It Master It