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Mathematics, 18.10.2019 21:30 walkerobrien5

Video dvds (ignoring the hole in the middle) have an area of 36π cm^2 the formula to calculate the circumference, c, for a circle is c=2√aπ, where a is the area of the circle. what is the circumference of the disc?
12πcrr
18πcrr
24πcrr
30πcrr

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