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Circular metal grills

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Circular metal grills

by maihuna » Mon Feb 09, 2009 7:59 am
HiI saw this question in gmatprep and did wrong : I dont have all the option but was puzzled not seeing the mine calculation:

A circular garment of radius r is surrounded by some metallic construction of width. Find the area of the metallic stuff...
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by BuckeyeT » Mon Feb 09, 2009 10:52 am
Sounds like a typical problem from GMAT prep materials of a circle within a circle.

There's a recent explanation in the problem solving section:
https://www.beatthegmat.com/geometry-con ... 29684.html

If that's not what you need, please add a more specific question.
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