Assume the orbit of the earth around the sun is a circle1


Assume the orbit of the Earth around the Sun is a circle1 of radius R = dEarth ≈ 1AU. The Earth takes 1yr to complete an orbit (revolve) around the Sun. How fast does the Earth revolve around the Sun in km/hr? (Side Note: Careful that the distance traveled by the Earth in one orbit is 2πR NOT R...)

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Mathematics: Assume the orbit of the earth around the sun is a circle1
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