Area of sector of central angle 200 degree of a circle is 770cm. Find the length of the corresponding arc of this sector
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Answer:
therefore
πr²200/360=770
r²=770*360/200π
r²=77*18*7/22
r²=7*9*7
r=√7*7*3*3
r=7*3
r=21cm
therefore the length of the arc is
=2πr200/360
=22*21*10/9*7
=220/3
=73.34cm
thank you
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