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Two circles have diameters in the ratio1:3. Find the ratio of their circumferences.​

Answer»

Step-by-step explanation:Given that equation, you can see that the ratio of the circumferences will be the same as the ratio of the diameters.  This is TRUE because you are taking the two diameters and multiplying them by the IDENTICAL number.  This means the proportions will remain the same. For EXAMPLE, if the diameters really were 1 and 3, the circumferences would be 3.14 (1*3.14 because PI = 3.14) and 9.42 (3*3.14).  The ratio of these numbers is 1:3.



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