Mathematics
Grade9
Easy

Question

Calculate the arc length of the sector shown below. Give your answer to 3 decimal places.

  1. 9.425 cm    
  2. 8.375 cm    
  3. 10.265 cm    
  4. 5.675 cm    

hintHint:

Arc length = fraction numerator theta over denominator 360 end fraction cross times 2 cross times pi cross times r

The correct answer is: 9.425 cm


    Arc length = fraction numerator theta over denominator 360 end fraction cross times 2 cross times pi cross times r
    fraction numerator theta over denominator 360 end fraction cross times 2 cross times pi cross times r
    fraction numerator 90 over denominator 360 end fraction cross times 2 cross times pi cross times 6
    3 pi
    Arc length = 3 picm
    Arc length = 9.42477796…cm
    Arc length = 9.425 cm

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