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OpenStudy (anonymous):
how to find the circumference of a circle if the radius is 2x+1?
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OpenStudy (anonymous):
plug it into the magical formula, of course!
OpenStudy (anonymous):
C=2*3.14*r 6.28*2x +1....so now what :( am i even close?
jimthompson5910 (jim_thompson5910):
it helps to place 'r' in parenthesis \[\Large C = 2\pi r\] \[\Large C = 2\pi ( r)\] \[\Large C = 2\pi (2x+1)\]
jimthompson5910 (jim_thompson5910):
when you say 6.28*2x +1, you're only multiplying the 6.28 by the 2x when it should be 6.28 times (2x+1)
OpenStudy (anonymous):
awesome!! thank you!!!
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