Question

radius of a circle is 7 cm and the angle subtended at the centre is 60 degree find the length of the arc

Answer 1

length of arc =2×22/7 ×7×60/360
=2×22×1/6
=22/3 = 7 1/3 cm Ans

Answer 2

length of arc = theta πr/180°.
=theta {22/7×7}/180°
= 60°×22 / 180°
= 22/3
= 7.3cm