Question
The distance of a chord from the centre of a circle of radius 7cm is 5cm,what is the length of the chord to the nearest centimetre?
Answers
Steve
draw a radius perpendicular to the chord.
If the center of the circle is O, the chord is AB, and the midpoint of the chord is P, then you have a right triangle where the leg OP is 5, and the hypotenuse (the radius) is 7. So, PA=PB is half the chord length.
If the center of the circle is O, the chord is AB, and the midpoint of the chord is P, then you have a right triangle where the leg OP is 5, and the hypotenuse (the radius) is 7. So, PA=PB is half the chord length.