The Earth is an oblate spheroid and not a perfect sphere. This is because :
I. The Earth has a rotational motion and the rotational speed increases as one goes from the Poles towards the Equator.
II. The Equator experiences greater gravitional pull from the Sun.
III. The intensity of sunlight received at the Equator is greater than that at the Poles.
Consider the following statements :
Which of these statements are correct?
I.Earth is the fourth largest planet of the solar system
II. The circumference of Earth is about 40000 KM
III. Earth's Polar diameter is about 43 KM shorter than its equatorial diameter
IV. The total surface area of Earth is about 510 million square KM