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Exercício de prisma

por raphael (paiva vol 2) Normal Monday, December 17th, 2012

Exercício:

em um prisma hexagonal regula de altura de raiz quadrada de 3 m a area lateral e igual a area de uma das bases. calcule o volume desse prisma

Informações Adicionais:


Respostas:

33 Respostas a “prisma”

Hortência diz:

AL= AB                                                     
Pbase x H= 6.a2√3/4
6.a x √3= 6.a2√3/4
 6.a2√3= 6.a √3 x 4
6.a2√3= 24a√3
6.a2/24a= √3/√3
1/4a= 1> 1/1/4= 1 x 4/1
a= 4 m
 
 AB= 6.a2√3/4
AB= 6.42√3/4
AB= 6.16√3/4
AB= 96√3/4
AB= 24√3 m2
V= AB x H
V= 24√3 x √3
V= 72 m3 
Resposta: V= 72 m3

Morgana diz:

um prisma triangular te 20 raiz de 3 cm cubico de volume e 5cm de aresta lateral. calcule a aresta da base.
 

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