geometry questions

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ifthyder: Master | Next Rank: 500 Posts; Posts: 118; Joined: Fri Apr 18, 2008 4:58 am; Thanked: 1 times

by ifthyder » Mon Nov 03, 2008 12:30 am

explain?

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Source: Beat The GMAT — Problem Solving | Mon Nov 03, 2008 12:30 am

chayanika: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Tue Aug 26, 2008 1:09 am; Thanked: 2 times

by chayanika » Mon Nov 03, 2008 5:07 am

Length of Arc AB = (126/360)*2*pie*8

The answer is option (b) 5.6 *pie

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earth@work: Master | Next Rank: 500 Posts; Posts: 248; Joined: Mon Aug 11, 2008 9:51 am; Thanked: 13 times

by earth@work » Mon Nov 03, 2008 10:08 am

length=radius*Ѳ, where Ѳ=(angle degree)∏/180degree

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