Geometry

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VenugopalGurram: Junior | Next Rank: 30 Posts; Posts: 13; Joined: Thu Nov 29, 2012 12:55 am

by VenugopalGurram » Thu Dec 06, 2012 12:11 am

In the Circle,PQ is Parallel to the diameter OR and length of OR is 18.
What is the length of the minor arc PQ?

A.2Ï€
B.9Ï€/4
C.3Ï€
D.7Ï€/2
E.9Ï€/2

Source: Beat The GMAT — Quantitative Reasoning | Thu Dec 06, 2012 12:11 am

Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pm; Location: Vancouver, BC; Thanked: 5254 times; Followed by:1268 members; GMAT Score:770

by Brent@GMATPrepNow » Fri Dec 07, 2012 3:10 pm

Here's one approach:

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