Originally it was a rotating liquid mass, which led to a sphere which is swelled at the equator and flattened at the poles.
3-d shapes are not made from 2-d shapes. 3-d shapes may have projections onto a plane that are 2-d.
2/3*pi*r^2
There are infinitely many different plane figures that can be made up of 2-dimensional shapes - provided that they are all in the same plane. There cannot be any 3-dimensional shapes involved.
Two hemispherical ends = 4*pi*radius2 Lateral surface area of the cylinder = 2*pi*r*lenght of cylinder Work both out separately and the sum of them will give you the total surface area in square units.
An alien
How the Earth Was Made - 2009 Birth of the Earth 2-3 is rated/received certificates of: Australia:G
How the Earth Was Made - 2009 Vesuvius 2-2 is rated/received certificates of: Australia:G
How the Earth Was Made - 2009 Birth of the Earth 2-3 was released on: USA: 9 December 2009
the moon appears to change shapes because you only see the part of it that reflects sunlight THAT YOU CAN SEE. so of the 1/2 of the moon that is illuminated, you only see part of it, the part changing as the moon orbits the earth.
How the Earth Was Made - 2009 Earth's Deadliest Eruption 2-11 is rated/received certificates of: Australia:G
How the Earth Was Made - 2009 The Deepest Place on Earth 1-2 was released on: USA: 17 February 2009
How the Earth Was Made - 2009 Earth's Deadliest Eruption 2-11 was released on: USA: 9 February 2010