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The formula to calculate radius is Pi x Diameter. So, if the radius is 7, the diameter is 14. Then, do 14 x pi (3.14) and your circumference will be 43.96

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Q: What is the circumference if the radius is 7?
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If a circle has a circumference of 43.98 what is the radius?

If a circle has a circumference of 43.98 the radius is: 7 (6.999).


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