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hmm I am just a liitle confused in this Steradian. Now I know that this works only with 3D.

Now a radian is = arc of the size of a radius/radius

So that

2*22/7*r/r = 360'

2*22/7rad = 360'

22/7rad = 180'

Now that's how a radian is counted in 2D

Is there any connection like this in a steradian? I mean can it be converted into degrees and measure the angle of 3D objects.

I just need to know this because I am realy confused of this Steredian. Please guy if you got any links about it post here.

Thanks