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SAT - Math - Speed Time Distance

The distance traveled by Earth in one orbit around the Sun is about 580,000,000 miles. Earth makes the complete orbit around the Sun in one year. what is approximate average speed of Earth, in miles per hour, as it orbits the Sun?

The distance traveled by Earth in one orbit around the Sun is about 580,000,000 miles. Earth makes the complete orbit around the Sun in one year. what is approximate average speed of Earth, in miles per hour, as it orbits the Sun?

 

length of earth orbit = circumference = 2*pi*580,000,000 = 3.6 billion miles (approx)

time = 1 year = 365*24 hours

speed = distance / time = 3.6 billion / (365*24) = 415000 miles per hour (approx)