Panic Posted January 28, 2005 Share Posted January 28, 2005 ??? what say you!! that just gave me a head ache! Or you could just square the radius and multiply it by 3 approximately close enough ... give or take .142 Link to comment Share on other sites More sharing options...
ed84c Posted January 28, 2005 Share Posted January 28, 2005 Never post again. where u being sincere? My suggestion, work it out in terms of pi. Alternatively if you are allowed to use a computer for graphs; draw a graph of Cos-1 rsqrd * ®sqrd. Then read off the graph. Allthough unless its a special challenge, that requires lateral thinking......... Link to comment Share on other sites More sharing options...
mike12345 Posted August 29, 2008 Share Posted August 29, 2008 By using this formula we can find the radius of circle.i.e,R=3.14*r*r.Same for area also. ======================= mike5 WideCircles Link to comment Share on other sites More sharing options...
ajb Posted August 29, 2008 Share Posted August 29, 2008 By using this formula we can find the radius of circle.i.e,R=3.14*r*r.Same for area also. You mean the area enclosed by a circle ([math]A[/math]) is given by [math]A = \pi r^{2}[/math] where [math]r[/math] is the radius. So given the area we know the radius, true. (Why we bringing this thread alive again?) Link to comment Share on other sites More sharing options...
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