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What's the area? (Posted on 2002-05-08) Difficulty: 4 of 5
Consider the picture to the right. We have two concentric circles, one inside another. We do not know the radius for either one of them.

We do, however know that the chord (shown in red) - a line whose ends are on the outer circle and which is tangent to the inner circle - has a length of 10 inches.

What is the area (shaded in light-blue) between the two circles?

See The Solution Submitted by levik    
Rating: 3.7333 (15 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Thank you, NikkiCeeAnne2004-10-05 14:17:53
re: Why not post the best solution?nikki2004-10-05 07:44:36
Why not post the best solution?CeeAnne2004-10-04 21:24:40
SolutionSolutionAntonio2003-08-22 05:31:02
Solutioncorrected solutionRavi Raja2003-03-03 17:34:16
SolutionWhat's the Area ?Ravi Raja2003-01-06 02:37:04
Solutioni don't know you...here is my solutionDaniel2002-10-15 21:14:43
SolutionAreaTomM2002-05-09 23:34:50
Better Answer...Tom2002-05-09 16:43:23
My AnswerTom2002-05-09 12:37:27
I have the solutionSergio Pasini2002-05-09 06:59:37
solutionnarcoleptic2002-05-08 14:34:24
solutiontony danza2002-05-08 14:17:34
More info on SolutionAndrew Elliott2002-05-08 12:28:47
Solution??Fizzle2002-05-08 12:00:27
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