The Earth is approximately spherical in shape. However, it is not a perfect sphere but is better described as an oblate spheroid. This means that the Earth is mostly spherical but slightly flattened at the poles and bulging at the equator.
The Earth's shape is a result of its rotation. As the Earth spins on its axis, the centrifugal force generated by this rotation causes the equatorial region to bulge outward slightly. At the same time, the gravitational force acting on the Earth pulls the material towards the center, creating a slight flattening at the poles.
The equatorial diameter of the Earth is slightly larger than the polar diameter, which means the Earth is not a perfect sphere. The equatorial diameter is about 12,756 kilometers (7,918 miles), while the polar diameter is slightly smaller, approximately 12,714 kilometers (7,899 miles).
Overall, while the Earth is not a perfect sphere, it is still very close to being spherical in shape.