The radius of a circle is 13 cm and the length of one of its chords is 10 cm, find the distance of the chord from the centre.
Given
radius = 13 cm
length of one of its chord = 10 cm
1/2 chord=10×1/2=5cm
Distance of the chord =√r2−l2
=√132−52
=√169−25
=√144
=√(12)2
= 12. cm
∴ The distance of the chord = 12 cm.