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| Math Central | Quandaries & Queries |
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three equal circles each of radius 1 cm are circumscribed by a larger circle.find the perimeter of circumscribing circle? |
Measuring is easier with polygonal figures. So in a problem like this start by adding some points (centers of circles, points of contact) and some lines joining them. The problem should become a lot easier, especially if your diagram is neat enough to show symmetries than exist.
Good hunting!
-RD
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Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences.