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 - Bzziii

In a circle of diameter 42cm ,if an arc subtends an angle of 60 ˚ at the centre where `\pi`=`22/7`,then the length of the arc is (a) 22/7 cm (b) 22

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

(a) 22/7 cm 
(b) 22 cm 
(c) 44 cm
(d) 11cm 





(b) 22 cm 

Explanation:

Length of Arc APB = `\frac{\theta}{360}``\times``(2\pi "r")`

= `\frac{60}{360}``\times` 2 `\times` `22/7``\times` 21

= `1/6` `\times` 2`\times` `22/7` `\times` 21

= 22 cm





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