Angle subtended by a chord PQ on the centre of a circle is 180 degree. If length of chord PQ is 54 cm, then what will be the diameter of this circle?
Answer & explanation
Correct answer: option 3
If an angle subtended by a chord on the circumference of a circle is 180 degrees, then the chord is the circle's diameter.
So the length of the diameter is 54 cm.
Therefore, length of diameter is 54 cm.