1570333757_5d99643dca874.png

In the figure above, PQ is a diameter of cirde O, PR=SQ, and △RST is equilateral. If the length of PQ is 2, what is the length of RT?



1/2

1/~$\sqrt{3}$~

~$\sqrt{3}$~/2

2/~$\sqrt{3}$~

~$\sqrt{3}$~

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GMATAdvanced-PS