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 Tricky Area (Posted on 2002-05-10)
Remember this problem? The one where you had to find the area between two circles by only knowing the length of the tangent "chord" (the red line)?

That problem is solved using some (moderately) tricky geometry. But if you know that the problem is solvable, it's actually pretty easy to solve by simply using the formula for the area of the circle and a bit of logic.

Can you do it?

 See The Solution Submitted by levik Rating: 3.5714 (7 votes)

 Subject Author Date solution belated salil 2006-02-25 07:13:42 Solution: Independent of the radii Shiv 2004-10-12 05:10:24 Why 10 inches? Vinodhan Selvarajalu 2003-05-08 01:04:09 re: Tricky Ravi Raja 2003-03-03 17:50:14 I had already posted its solution Ravi Raja 2003-03-03 17:43:34 solution Justin 2002-05-11 05:08:05 comment to dknite TomM 2002-05-10 18:26:10 solution via circle equation dknite 2002-05-10 07:27:02 Elegant TomM 2002-05-10 07:24:18 Tricky Happy 2002-05-10 06:11:59

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