Question

calculate difference between polar and equatorial diameter

Answer 1

Answer:

The planet's rotation causes it to bulge at the equator. Earth's polar radius is 3,950 miles (6,356 km) — a difference of 13 miles (22 km). Using those measurements, the equatorial circumference of Earth is about 24,901 miles (40,075 km). ... This shape, caused by the flattening at the poles, is called an oblate spheroid.

Hope it helps you ...