Answer:
Step-by-step explanation:
We will use the American definition of a billion. That's 1 * 10^9. Also, since we are just making things happen, we will say that we have a billion square miles.
Area = s^2
Area = 1 * 10^9
s^2 = 1 * 10^9 Take the square root of both sides
sqrt(s^2) = sqrt(1 * 10^9)
s = 31622 miles.
Just how big is that? It is smaller than the circumference of the earth.
