Math, asked by cfvgbh71, 7 months ago

Please help me answer this question asap!

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Answered by Anonymous

35

7n+12+13n-16+6n=360°

26n-4=360°

26n=360-4

n=356/26

n=14.07

arcBC=6n

arcBC =6×14.0784.42

=84.42 is the correct answer

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