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anonymous

  • 5 years ago

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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  1. anonymous
    • 5 years ago
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    my begging was to grab ur attention lmao and i suck... ;D

  2. anonymous
    • 5 years ago
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    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.

  3. anonymous
    • 5 years ago
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    OK TY.

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spraguer (Moderator)
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