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14-03-2016
Mathematics

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The formula C = 2 π r is used to calculate the circumference of a circle when given the radius. What is the formula for calculating the radius when given the circumference?

A) C/2π = r
B) C/2r = π
C) 2 πC = r
D) 2π/C = r

Respuesta :

14-03-2016

the correct answer is A because it C=2*3.14*R

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