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Rozmýšľala som nad A ale nie som si istá. Ak by sa dalo aj vysvetlenie ďakujem!
Zo štvorca ABCD so stranou dĺžky 12,7 cm sme vystrihli štvorec KLMN so stranou dĺžky 5,8 cm, ako je znázornené na obrázku. Vypočítajte v cm obvod osemuhloníka ABCMLKND
Alica si kúpila zmes orechov obsahujúcu kešu orechy, lieskové orechy a arašidy zastúpené v pomere 1 : 2 : 3. Vypočítajte v gramoch hmotnosť celej zmesi, ak lieskové orechy majú hmotnosť 60g.
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