John Yeadon

2015-03-22 20:47:10 UTC

There are 4 pi sterradians on a sphere - presumably from 4 pi r squared the

surface area of a sphere.

However there is something called the square degree. So how many square

degrees are there on a sphere?

surface area of a sphere.

However there is something called the square degree. So how many square

degrees are there on a sphere?