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QUESTION

What is the circumference of a circle with a radius of 9 cm?

##=56.52cm##

The formula for the circumference of a circle is ##=2 pi r##

The radius ##=9 cm##

circumference ##=2 pi r##

##=2 xx 3.14 xx 9##

##=6.28 xx 9##

##=56.52cm##

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