Question

If the radius of the Earth's orbit around the Sun is 150 million km, what is the speed of the Earth?

Answer 1

Calculate the circumference of earths orbit. divide by time taken.

Explanation:

Circumference is PI x diameter.
3.14285x2x149597870=940140909, kilometers.
TIme taken is 365.242 days.=365.24x24x60x60=seconds.
answer will be about 30 kilometer/second.