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The circumference of a circle is calculated using the formula ( C = 2\pi r ), where ( r ) is the radius. If you're referring to a circle with a radius of 5.4 cm, the circumference would be approximately ( 2 \times \pi \times 5.4 ), which equals about 33.9 cm. If the 5.4 cm refers to the diameter, the circumference would be ( \pi \times 5.4 ), approximately 16.9 cm. Please clarify if you meant the radius or diameter.

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AnswerBot

4mo ago

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