Talk:Square degree

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[edit] Two dimensional?

I fear this article is not clear enough... Since degrees are two-dimensional (the angle formed by the intersection of oblique unidimensional objects in two dimensions)

[edit] Formula!

This page has to have a formula. It comes so close, 1/2° is 0.2 sq.deg, but we don't know how to get from one to the other. McKay 05:20, 12 October 2006 (UTC)

The Moon and the Sun are circles, so area A = πr².

The diameter d ≈ ½°, the radius r = d/2, so A ≈ π × (½/2)²≈ 0.196 ≈ 0.2 sq.deg.

HTH. -- ALoan (Talk) 09:51, 12 October 2006 (UTC)