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Uhol otáčania Zeme
O aký uhol sa Zem otočí okolo svojej osi za 80 minút?
\( \normalsize\frac{1}{18}\cdot360\degree=20\degree \)
\( \normalsize\frac{1}{18}\cdot360\degree=25\degree \)
\( \normalsize\frac{1}{18}\cdot360\degree=30\degree \)
\( \normalsize\frac{1}{18}\cdot360\degree=10\degree \)