A spherical balloon is inflated at a rate of = 5 cm /s. Find the rate hat which the radius of the balloon in increasing (in cm/s) when the area of the balloon is 3 cm2. dr dt cmls Notes: 1. The answer must be entered as a decimal number. Example: 3.47 2. Do not enter the unit of measurement. 3. Round the answer to two decimal places, 4. The tolerance is 5%