Posted by Jillian on .
A diameter of a circle is 32 yards long. A chord is 11 yards from the center. How long is the chord?

Geometry 
Reiny,
diameter = 32
r = 16
Let the length of the chord be 2x.
Join one end of the chord to the centre.
You now a rightangled triangle with hypotenuse of r, one leg as 11 and the other leg as x
x^2 + 11^2 = (16)^2
x^2 = 135
x = âˆš135
so the chord has length 2âˆš135 or 23.24 yards