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OpenStudy (anonymous):
Using the formula C = 2πr, find the circumference of a circle with diameter of 28 inches.
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OpenStudy (anonymous):
well the radius of a circle is half the diameter. so for this problem the radius is 14. So C=2(pi)(14)
OpenStudy (anonymous):
Ok, I am still confused??
OpenStudy (anonymous):
The circumference of any circle with radius r and diameter d is determined with the formula C=2(pi)r which is also C=(pi)d because when you multiply the radius by 2 you get the diameter. Is this making sense so far?
OpenStudy (anonymous):
Ohhhh ok, yes, it does. Thank you! I get it now!!! :)
OpenStudy (anonymous):
good. :)
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