variables: c= circumfurance (the Distance around) d= diameter( from one side through the middle to the other) r= radius (half the diameterhttp://www.blogger.com/img/blank.gif) A= area (space it takes up) pi= 3.14http://www.blogger.com/img/blank.gif
fomulas: c=pi times d d=2 times r r= diameter divided by 2 A= pi times radius squared (times it self)
eg. if d = 6 then the radius is 3 and the circumfirence is 18.84 so the area must be 113.04.
the anwser is 314
3 comments:
somthing happened so theirs a whole bunch of http://www.blogger.com/img/blank.gif's
Hi Philip, awesome job on your scribe post! I liked the picture that you added. It was very clear and it showed us how to find the area of a circle with the radius. But to make your scribe post even better, I think that you should add a link or a video. Here is a video and a link that I think you might like:
Video: http://www.youtube.com/watch?v=eiHWHT_8WrE
Link:
http://ca.ixl.com/math/grade-7/circle-graphs-and-central-angles
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