The diameter of the earth at the equator is 800 miles calculate the circumference of the earth at the equator Using  4(8/9)²

Expert Answers
nathanshields eNotes educator| Certified Educator

The circumference of a circle is its diameter multiplied by pi.

You're using pi = 4(8/9)^2

So the circumference would be 800*4*(8/9)^2 = 2528 miles

But since the diameter is rounded to the hundreds, 2500 would be a good answer.