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ps THE TUNNEL ENTRANCE

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Joined: 30 May 2005
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09 Jun 2005, 14:40
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. hello
does anyone have a clue on this one thanks

The figure above shows the shape of a tunnel entrance. If the curved portion is of a circle and the base of the entrance is 12 feet across, what is the perimeter, in feet, of the curved portion of the entrance'?
(A) 9π
(B) 12π
(c) 9π sq root of 2
(D)18π
(E)9π/sq root of 2

Figure is on the attachment
Attachments

File comment: figure of the curved portion
CURVED PORTION of the entrance.doc [23.5 KiB]

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Joined: 07 Jun 2004
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09 Jun 2005, 14:53
i think there is some info missing in the diagram
09 Jun 2005, 14:53
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