A circle has radius 2 cm. What is the length of its longest chord?
16 cm
4 cm
2 cm
5 cm
In a circle, diameter is the longest chord.
Diameter=2×radius=4 cm
A chord of length 6 cm is drawn on a circle of radius 5 cm. Calculate its distance from the centre of the circle.
Find the original radius of a circle given that when the area of the circle is increased by 44 cm, its radius increases by 2 cm.