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short answer

44 cm (rounded to nearest whole number)

long answer

the formula for circumference is equal to pi (3.141592654...) times d

where d = diameter

if r = radius, 2r = d

therefore circumference = 2r times pi

2(7cm)(3.141592654) = 43.98229715 cm

*note* this answer is not 100% accurate because pi is a non terminating number, that is it goes on forever.

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Q: What is the circumference of a circle with a radius of 7 centimeters?
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