contestada

A runner lane is exactly 50 feet from the center of a circular race track. The runner needs to run a total of 785 feet. How many laps does the runner need to complete?

Respuesta :

we have

so the circumference is:

[tex]\begin{gathered} C=2\pi r \\ C=2\pi\cdot50 \\ C=100\pi \\ C=100(3.14) \\ C=314 \end{gathered}[/tex]

therefore:

[tex]n\text{umber of laps=}\frac{785}{314}=2.5[/tex]

answer: 2.5 laps

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