geometry
posted by aj .
suppose the diameter of a circle is 20in. long and a chord is 16in. long. What is the distance from the center of the circle to the chord
Draw a radius from the center to the end of the chord. THe draw a radius from the center perpendicular to the chord. You have a right triangle, one side is radius (given), one side is 1/2 chord, and your distance. Use the pyth theorm to solve.

geometry 
Anonymous
If the equation of a circle is (x + 4)2 + (y  6)2 = 25, its radius is
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