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Plášť valca tvorí štvorec s obsahom 144dm2. Vypočítaj objem a povrch tohto valca.
Do nádoby tváru kocky s objemom 1 liter sme vložili najväčší možný valec z olova. Koľko decilitrov vody sa teraz zmestí do nádoby?
Valcový súd má postavu s obsahom 19,625dm2 a jeho osový rez je obdĺžnik s dĺžkou uhlopriečky 1,3m. Vypočítaj objem a povrch suda.
Rotáciu obdĺžnika s rozmermi 4x10cm okolo strany vznikne valec. Vypočítaj jeho povrch.
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