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help needed ds 173

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help needed ds 173

by nafiul9090 » Tue Jul 05, 2011 8:29 am
If arc PQR above is a semicircle, what is the length of
diameter PR ?
(1) a = 4
(2) b = 1

sorry i am not able to draw the diagram .....but help needed
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by finance » Tue Jul 05, 2011 9:08 am
what are a and b? can you attach the figure?
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by GMATGuruNY » Tue Jul 05, 2011 12:54 pm
nafiul9090 wrote:If arc PQR above is a semicircle, what is the length of
diameter PR ?
(1) a = 4
(2) b = 1

sorry i am not able to draw the diagram .....but help needed
I answered a similar question here:

https://www.beatthegmat.com/length-of-th ... 71979.html

The same approach can be used to answer DS question 173 in the OG12.
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