Question

In a circle of diameter 42cm ,if an arc subtends an angle of 60 ˚ at the centre where ∏=22/7,then the length of the arc is

(a) 1/45
(b) 2/15
(c) 4/45
(d) 1/9​

Answer 1

Step-by-step explanation:

Diameter of circle = 42 cm

Radius = 42/2 = 21 cm

Central angle = 60°

We know that,

Length of the arc = θ/360 (2πr)

= 60/360 x 2 x 22/7 x 21

= 22

Length of the arc is 22 cm

Answer 2

Answer:

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