What is the approximate speed at which the earth orbits the sun?
It is 30 kilometer per second.
The earth goes round in 365.242 days.
The average radius of earth's orbit is 149.10 million kilometers.
so circumference can be calculated.
circumference is Pi x Diameter..Pi=3.1428
365.242 days convert into seconds.
365.242 x 24 x 3600
distance divided by time will give speed.