SOLUTION: In a circle the circumference and diameter vary directly. Without using a value of pi, find the diameter of a circle with a circumference of 154 if you know that in a second circle

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Question 1112828: In a circle the circumference and diameter vary directly. Without using a value of pi, find the diameter of a circle with a circumference of 154 if you know that in a second circle the diameter is 14 when the circumference is 44.
Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
In a circle the circumference and diameter vary directly.
Without using a value of pi, find the diameter of a circle with a circumference of 154 if you know that in a second circle the diameter is 14 when the circumference is 44.
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44/14 = 154/d

Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.
Use the proportion


D%2F154 = 14%2F44.


In this proportion, the numerators are the diameters, the denominators are circumferences.


From the proportion, find the unknown diameter D = %28154%2A14%29%2F44.

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