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If the radius of a circle is multiplied by 4, then how many times larger is the circumference of the new circle?
 one year ago
 one year ago
If the radius of a circle is multiplied by 4, then how many times larger is the circumference of the new circle?
 one year ago
 one year ago

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MonkeyballBest ResponseYou've already chosen the best response.0
The circumference of a circle is given by \[2*\pi*r\]
 one year ago

MonkeyballBest ResponseYou've already chosen the best response.0
and lets say we pick r=1 we get \[2*\pi\]
 one year ago

MonkeyballBest ResponseYou've already chosen the best response.0
now lets say that we multiply the radius by 4 so now r=4
 one year ago

MonkeyballBest ResponseYou've already chosen the best response.0
8 pi is 4 times bigger than 2 pi
 one year ago

mrs.perkinsBest ResponseYou've already chosen the best response.1
so whats the answer
 one year ago

MonkeyballBest ResponseYou've already chosen the best response.0
Look at my last post
 one year ago

mrs.perkinsBest ResponseYou've already chosen the best response.1
so what do i do next
 one year ago

MonkeyballBest ResponseYou've already chosen the best response.0
wait can you tell me what the original radius equals?
 one year ago

mrs.perkinsBest ResponseYou've already chosen the best response.1
i really dont know
 one year ago
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