Hranoly

Half tone yellow

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- značíme v - v anglickém jazyce h - vzdálenost dolní a horní podstavy hranolu

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12 stěnových úhlopříček - úhlopříčky podstav 2.2 = 4 - úhlopříčky bočních stěn 2.4 = 8

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- 4 tělesové úhlopříčky&nbsp;

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2) Vypočítejte povrch kvádru, a = 6 cm, b = 5 cm, c = 3 cm.

&nbsp;ŘEŠENÍ: a = 6 cm b = 5 cm c = 3 cm S = ? cm2

S = 2( ab + bc + ca ) S = 2 • ( 6 • 5 + 5 • 3 + 3 • 6 ) cm S = 2 • ( 30 + 15 + 18 ) cm S = 126 cm2 Povrch kvádru je 126 cm2 .&nbsp;

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Podívej se na skládání kvádru <a href="https://www.youtube.com/watch?v=oFhTPlnmcgw">https://www.youtube.com/watch?v=oFhTPlnmcgw</a>

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Watercolor texture 3

Hranoly nebo hranolky ?

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12 hran - 8 hran podstavných - 4 boční hrany&nbsp;

- 6 stěn -2 čtvercové podstavy – horní a dolní -4 boční stěny obdélníkového tvaru

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- tělesa - mají 2 podstavy a plášť - lze vypočítat jejich objem a povrch

1) Délka hrany krychle je 7 cm. Vypočítejte povrch krychle.&nbsp;

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2) Vypočítejte povrch kvádru, a = 6 cm, b = 5 cm, c = 3 cm.&nbsp;

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Objem pravidelného 4-bokého hranolu

odkaz na video: <a href="https://www.youtube.com/watch?v=uT5SMd65lxY">https://www.youtube.com/watch?v=uT5SMd65lxY</a>

&nbsp;&nbsp;ŘEŠENÍ: a = 7 cm S = ? cm2

S = 6 • a • a S = 6 • 7 • 7 S = 294 cm2

<a href="http://www.vyukovematerialy.cz/matika/5/geometr/uvod.htm">http://www.vyukovematerialy.cz/matika/5/geometr/uvod.htm</a>

<a href="https://www.youtube.com/watch?v=oFhTPlnmcgw">https://www.youtube.com/watch?v=oFhTPlnmcgw</a>

<a href="https://www.slideserve.com/rae/kv-dr">https://www.slideserve.com/rae/kv-dr</a>

<a href="https://www.slideserve.com/nantai/kolm-hranoly-povrch-a-objem">https://www.slideserve.com/nantai/kolm-hranoly-povrch-a-objem</a>

<a href="https://slideplayer.cz/slide/3068456/">https://slideplayer.cz/slide/3068456/</a>

<a href="https://slideplayer.cz/slide/11233845/">https://slideplayer.cz/slide/11233845/</a>

Ve své knížce jsem čerpala informace z více zdrojů.

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Povrch pravidelného 4-bokého hranolu

Odkaz na video: <a href="https://www.youtube.com/watch?v=HCrpuQ9Vs_w">https://www.youtube.com/watch?v=HCrpuQ9Vs_w</a>

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