10. The liquid in the first pipe was flowing at an average speed of 18 centimeters...

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10. The liquid in the first pipe was flowing at an average speed of 18 centimeters per second. When it flowed into the second pipe, the average speed increased to 72 centimeters per second. If the radius of the first pipe was 4.6 centimeters, what was the radius of the second pipe? 10. The liquid in the first pipe was flowing at an average speed of 18 centimeters per second. When it flowed into the second pipe, the average speed increased to 72 centimeters per second. If the radius of the first pipe was 4.6 centimeters, what was the radius of the second pipe?