Posted by cv on Monday, October 21, 2013 at 8:02pm.
A pipe manufacturer makes pipes of four different sizes. The diameter of each pipe is two times the diameter of the pipe of the next smaller size. The diameter of the biggest pipe is 16 centimeters.
What is the diameter of the pipe of the smallest size?

algebra  anon, Monday, October 21, 2013 at 8:10pm
2 cm.
i think
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