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![[Post New]](/templates/default/images/icon_minipost_new.gif) 12 May 2008 19:51:48 IST
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if r is radius of circle
den length of such chord
l=r rt2
now
reuired radius is d distace of mid pt of such a chord frm centre
so radius,
by py thagoras theorm
R=rt(r^2-(r /rt2)^2)
R=r/rt2
option c
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