Question

A spherical balloon is filled with (4500\pi) cubic meters of helium gas. If a leak causes gas to escape at (72\pi) m(^3)/min, then the rate at which the radius decreases 49 minutes after leakage began is

• A. (\frac{9}{7})
• B. (-\frac{2}{9})
• C. (\frac{9}{2})
• D. [suspicious link removed]

Hint:

Always calculate the specific value of the independent variable (like radius) at the requested time first.

Answer 1

The Correct Option is D