SOLUTION: A pipe 3.00 cm in diameter discharges 120 L of water in a certain time. What must be the diameter of a pipe that will discharge 180 L in the same time? [Hint: Assume that the amoun

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Question 1111928: A pipe 3.00 cm in diameter discharges 120 L of water in a certain time. What must be the diameter of a pipe that will discharge 180 L in the same time? [Hint: Assume that the amount of flow through a pipe is proportional to its cross-sectional area.]
Round your answer to 2 decimal places.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
%28pi%29a%5E2%2F120+=%28pi%29b%5E2%2F180

a%5E2%2Fb%5E2+=+120%2F180
a%5E2%2Fb%5E2=2%2F3
b^2 = 1.5^2*(3/2)
b=1.84
2b = 3.68
diameter = 3.68 cm