The circumference of a circle of diameter 10 cm is:
3.14 cm
314 cm
31.4 cm
0.314 cm
C = 2 x 3.14 x 5 = 31.4 cm
A circular wire of diameter 10cm is cut and placed along the circumference of a circle of diameter 1 metre. The angle subtended by the wire at the centre of the circle is equal to