Angle subtended by a chord CD on the centre of a circle is 180 degree. If radius of this circle is 14 cm, then what will be the length of chord CD?

28 cm

Concept used

Diameter is the largest chord of any circle.

Diameter = 2 x radius

Calculations

D = 2 x r

D = 2 x 14 = 28 cm

Therefore, the length of chord CD which is diameter is 28 cm.