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03-08-2017
Mathematics

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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

Respuesta :

03-08-2017

it's 12π, because √36=6. 6×2= 12 :)

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