Question 1079578
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<font size=4>
Half the 6.6m chord is 3.3m.

{{{drawing(400,400,-7,7,-7,7, red(line(-3.3,-5.6,0,0)),
red(locate(-2,-2.5,r)),
circle(0,0,6.5), line(0,0,0,-5.6), line(3.3,-5.6,-3.3,-5.6),
locate(-1.7,-5.6,3.3), locate(.1,-2.8,5.6)

 )}}}

Use the Pythagorean theorem on the right triangle

{{{matrix(5,1,
r^2=(3.3)^2+(5.6)^2,
r^2=10.89+31.36,
r^2=42.25,
r=sqrt(42.25),
r=6.5)}}}

Answer: 6.5 meters.

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Edwin</pre></font>