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Solution


Q.

What is the length of the arc of the sector of a circle with radius 14 cm and central angle 90°
1 22 cm  
2 44 cm  
3 88 cm  
4 11 cm  

Ans.

(1)

We have r=14 cm and θ=90°∴Length of the arc=θ360°×2πr=90°360°×2×227×14=14×4×22=22 cm