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RebelChi
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The circumference of a circle is 15ft. What is the length of the radius? Use 3.14 for pi. Round your answer to the nearest tenth of a foot?
 one year ago
 one year ago
RebelChi Group Title
The circumference of a circle is 15ft. What is the length of the radius? Use 3.14 for pi. Round your answer to the nearest tenth of a foot?
 one year ago
 one year ago

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mohd.jas Group TitleBest ResponseYou've already chosen the best response.2
The equation for circumference is 2*pi*r. You have pi and the circumference (= 15ft). So the equation becomes: 15 = 2*pi*r. Now solve for r.
 one year ago

RebelChi Group TitleBest ResponseYou've already chosen the best response.0
I'm confused :c
 one year ago

mohd.jas Group TitleBest ResponseYou've already chosen the best response.2
Okay, we'll do this stepbystep. The equation for the circumference of a circle is given by C = 2*pi*r, where C is the circumference (given as 15ft), pi is, well, pi (given as 3.14 in the question), and r is the radius of the circle. Our goal is to find the radius. First we substitute everything we know into the equation for the circumference, so it becomes: 15 = 2*3.14*r Are you following so far? Now, we divide both sides of the equation by 2*3.14, so that the rightside of the equation becomes only 'r'  like so: 15/(3.14*2) = (2*3.14*r)/(2*3.14) 15/(3.14*2) = r Now simply divide 15 by the product of the (3.14*2) to get the required radius in feet. :)
 one year ago

RebelChi Group TitleBest ResponseYou've already chosen the best response.0
6.28/ 15 right?
 one year ago

mohd.jas Group TitleBest ResponseYou've already chosen the best response.2
No, the other way! 15/6.28
 one year ago

RebelChi Group TitleBest ResponseYou've already chosen the best response.0
Ohh, Okay! Thank you!
 one year ago

RebelChi Group TitleBest ResponseYou've already chosen the best response.0
2.388535031847134?
 one year ago
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