Suppose a chord is 20 inches long and is 24 inches from the center of the circle. How do you find the length of the radius?
A line segment from the 20" chord to the center of the circle is a perpendicular bisector of the chord creating a right triangle with legs of 10" and 24" with radius of the circle forming the hypotenuse.
We can use the Pythagorean theorem to solve for the radius.
a = 10"
b = 24"
c = ?"