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Find the distance that the Earth travels in one day in its path around the Sun. Assume that a year has 365 days and that the path of the Earth around the Sun is a circle of radius 93 million miles.

I'm doing precalc review for a calc class and I don't know how to solve this.

Thanks in advance!

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    Very late, but since this has gotten bumped: There's no justification for carrying the answer to greater accuracy than $1\,600\,000$ miles, since the _earth's radius_ is a few times larger than $921$ miles. Carrying the answer to three decimals (an asserted accuracy of a few feet) is comical.2016-01-17

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The circumference of a circle of radius $r$ is $2\pi r$; you’ve been given $r$, so you can find the circumference of the orbit. It takes the Earth $365$ days to travel that distance, so in $1$ day it travels what fraction of the circumference?