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Riadidiel rozhodol že dažďovou vodou budú zachytávať na časť strechy s rozmermi 48*32 metrov koľko hektolitrov nazbierajú za mesiac , ak priemerný mesačný úhrn zrážok je 47 milimetrov?
škola má 408 žiakov a 26 učiteľov koľko hektolitrov pitnej vody sa mesačne ušetri pri splachovaný zachytenou dažďovou vodou ak každý žiak i učiteľ dene spláchne záchod priemerne 2krát. Pri 1…
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