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OpenStudy (anonymous):
this one has lots of words.. but i dont get it ... AUTOMOBILE tires ate mounted on circular metal rims. if a tire rim has a 13- inch diameter, what is its circumference?
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OpenStudy (anonymous):
my begging was to grab ur attention lmao and i suck... ;D
OpenStudy (anonymous):
circumference is given by \[C = 2\pi r\] Since we have the diameter and not the radius, we first need to use the fact that the diameter is two times the radius. So if d = 13, then \[r = \frac{13}{2}\] Now you just plug this r into the circumference formula.
OpenStudy (anonymous):
OK TY.
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