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Mathematics

Grade9

Easy

Question

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

9.425 cm
8.375 cm
10.265 cm
5.675 cm

hint Hint:

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 = $3 pi$ cm
Arc length = 9.42477796…cm
Arc length = 9.425 cm

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