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Mathematics

Grade9

Easy

Question

The diagram shows a sector of a circle with center O. The radius of the circle is 6.5 cm. The acute angle AOB is 70 degrees. Calculate the arc length sector.

26.9
32.9
40.1
43.1

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: 32.9

Arc length = $fraction numerator theta over denominator 360 end fraction cross times 2 cross times pi cross times r$
Arc length of the sector = $fraction numerator 290 over denominator 360 end fraction cross times 2 cross times pi cross times 6.5$
=32.899
=32.9

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