Translation examples
The Moon is only a half degree across (i.e. a circular diameter of roughly 0.5 deg), so the moon's disk covers a circular area of: π × (0.5°/2)2, or 0.2 square degrees.
Kuun kulmaläpimitta on noin 0,5 astetta, joten se peittää taivaasta noin (π/4)·0,52 ≈ 0,2 neliöastetta eli noin viisi miljoonasosaa.
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