Question

Calcule : 

A) 3 m x 4 m x 5 m =

B)3 cm x 1,2 cm x 5 cm =

c) 8 m2 x 2,5 m =

d)35 m3 :7 m=

Answer 1

$a) \\ \\ 3m + 4m + 5m \\ \\ 12m^2 * 5m \\ \\ = \fbox{ \ 60m^3\ }$

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$b) \\ \\ 3\ cm * 1,2 \ cm * 5\ cm \\ \\ 3,2 \ cm^2 * 5 cm \\ \\ = \fbox{ \ 18 cm^3\ }$

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$c) \\ \\ 8m^2 * 2,5m \\ \\ = \fbox{ \ 20 m^3 \ }$ 

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$d) \\ \\ \dfrac{35 m^3}{7m} \\ \\ = \fbox{ \ 5m^2 \ }$

Answer 2

a) $3~\text{m}\times4~\text{m}\times5~\text{m}=(3\times4\times5)~\text{m}^3=60~\text{m}^3$.


b) $3~\text{cm}\times1,2~\text{cm}\times5~\text{cm}=(3\times1,2\times5)~\text{cm}^3=18~\text{cm}^3$.


c) $8~\text{m}^2\times2,5~\text{m}(8\times2,5)~\text{m}^3=20~\text{m}^3$.


d) $35~\text{m}^3\div7~\text{m}=(35\div7)~\text{m}^2=5~\text{m}^2$.