Question

A spherical balloon is inflated with gas at the rate of 300 cubic centimeters per minute. How fast is the radius of the balloon increasing at the instant the radius is 70 centimeters?

Answer 1

Given:

Radius: 70
Rate: 300 cubic centimeters per minute

Answer:

Circumference: 440 cubed
Surface Area: 61575 cubed
Enclosed Volume:1436755 cubed

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So the final answer is: 1.4666 minutes