Úloha ID 1752 - 
Balík slámy ve tvaru kvádru o rozměrech 50 × 20 × 30 cm váží 10 kg. Jakou hmotnost bude mít balík ve tvaru kvádru o rozměrech 100 × 60 × 60 cm?
Správná odpověď je: B
Objem většího balíku je 360 000 cm3 a objem menšího balíku 30 000 cm3. Druhý balík je 12× (360 000/30 000) větší, takže váží 10 · 12 = 120 kg.
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