# Finding the total distance

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## Homework Statement

Taking the age of Earth to be about 4 ✕ 109 years and assuming its orbital radius of 1.5 ✕ 1011 m has not changed and is circular, calculate the approximate total distance Earth has traveled since its birth (in a frame of reference stationary with respect to the Sun). It is asking for this answer in meters.

## Homework Equations

I do not have an equation here yet, I have read the chapter on this but I do not know where to begin with this problem.

## The Attempt at a Solution

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Delta2
Homework Helper
Gold Member
In 1 year how much distance does the earth travel? It does exactly one circle around the sun right? The radius of that circle is given...

Homework Helper
Gold Member
I think the age of the earth is supposed to be ## 4 \cdot 10^9 ## years. Also, the orbital radius is ## r=1.5 \cdot 10^{11} ## m. Do you know how to compute the circumference of the circle to compute how far the earth travels in one year?

Yes if I am not mistaken it is the formula C = 2*π* Radius? So, I find the circumference of the earth first? I am confused about what I do with the circumference, do I then divide it by the age of the earth?

jbriggs444