please help include the function and answer to the following question

Question

What would be the volume of a spherical ballon after 11 seconds, if the radius of the ballon is increasing at 1.3 cm/sec? Round to the nearest tenth of a centimeter.

Answer 1

This depends on the initial radius of the balloon. If we assign 'i' to represent the initial radius, then after 11 seconds, the radius will now be i + 11*1.3, or i + 14.3 cm.

The formula for volume of a sphere is 4/3 * π * r³

So, after 11 seconds, the volume is 4/3 * π * (i + 14.3)³