perplexus.info :: Shapes : Circular Fun

Circular Fun (Posted on 2005-07-28)

When you draw three circles of radius r such that all three are externally tangent, what is the area of the shape in the center in terms of r?

See The Solution Submitted by Justin

Rating: 3.2857 (7 votes)

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i think

| Comment 12 of 19 |

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(1.7320508)*r*r - (pi*r*r)/2

your taking half of a circle, with radius r, out of an equalateral triangle with sides of length 2*r

Posted by jamie on 2005-10-19 22:34:37

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