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Dobrý deň, mohli by ste mi prosím niekto vypočítať tieto príklady na kontrolu:
1. Hrnček má tvar valca s výškou 60,7mm. Nachádzajú sa v ňom 2dl vody a ak ponoríme do vody guľôčku s priemerom 4cm, voda ešte nezačne z hrnčeka vytekať. Aký je minimálny priemer tohto hrnčeka?
2. Dĺžka telesovej uhlopriečky je kocky je 3 odmocnina zo 6 cm. Vypočítajte
A) dĺžku hrany kocky
B) objem kocky
C) povrch kocky
3. Kvetináč ma tvar kvadra s rozmermi podstavy 60cm x 40cm a výškou 30cm, hrúbka steny je 3,5cm. Vypočítajte jeho hmotnosť, ak hustota meterialu z ktorého je vyrobený je 2g*cm-3
4. Duta guľa ma objem 3432 cm3, hrúbka steny je 3cm. Vypočítajte vnútorný polomer gule?
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