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GMAT Prep Minor Arc Geometry

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by tini » Tue Feb 17, 2009 5:21 pm
measure of arc op=2*35=70
measure of arc qr=2*35=70
measure of arc pq=180-(70+70)=40

pq is 40/360 of the circumference

1/9 * 2 pi*9=2pi
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by dnkcdnguy » Tue Feb 17, 2009 5:52 pm
Thanks Tini. I forgot to take away another 70 degrees.

The formula x/360 helps. Also, since the D = 18pi, 1/9 * 18/1 = 2pi

Thanks for your help :)
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inquiry

by valdemas » Wed Feb 18, 2009 11:53 am
tini wrote:measure of arc op=2*35=70
measure of arc qr=2*35=70
measure of arc pq=180-(70+70)=40

pq is 40/360 of the circumference

1/9 * 2 pi*9=2pi
why is the measure of op= to 70 and not 35?
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by tini » Wed Feb 18, 2009 12:03 pm
because of tha property:
measure of the minor arc = twice the inscribed angle
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pl can u explain once more elaborately

by kalyand022 » Thu Feb 19, 2009 7:24 pm
i m nt able to undersnt..can u pl elaborate the ans with explaination...
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