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An anthropologist visits an igloo with a circular floor. While there, she measures it and calculates that it has a circumference of 12.56 meters. What is the floor's diameter?

Use 3.14 for ​.

Respuesta :

[tex]\bf \textit{circumference of a circle}\\\\ C=2\pi r~~ \begin{cases} r=radius\\ -----\\ C=12.56 \end{cases}\implies 12.56=2\pi r\implies \cfrac{12.56}{2\pi }=r[/tex]

now, the diameter is just twice the radius, so 2*r.

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