*This post evaluates the speed of an object going around the sun assuming a circular orbit.*

**Question:**An object travels in a circle around the sun. The radius of the circle is 93 million miles. It takes 365 ¼ days for the object to make one complete revolution around the sun. What is the average speed in miles per hour for this object?

**Answer:**The distance traveled is the circumference of the circle, which is

2 x 3.1416 x
93,000,000

or 584,337,600 miles.

(Note to self. Remember to multiply by 2.)

(Note to self. Remember to multiply by 2.)

The number of hours in 365 ¼ days is 8,766.

The average speed in miles per hour is (585,337,600)/(8766) or 66,661 miles per hour.

**Note:**The earth is 93 million miles from the sun but I do not know the exact nature of its orbit. Does it travel in a circle or ellipse? I am clueless. If science students wants to create more questions of this type I will publish guest posts.

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