The city of Dallas wants to improve its current drainage system. The pipes underground now have a volume of 23.55 ft3 per pipe. The new pipes are the same length, 30 feet long, with an outside diameter of 3 feet. The wall of the pipes is 6 inches thick. How much more volume do the new pipes have than the current pipes? The formula for the volume of a right circular cylindrical pipe is V = nr2h (Use 3.14 for n)

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