Question

Determina lungimea muchiei unui cub care are ; a) suma muchiilor de 480 m ; b) volumul de 8 m cubi ; c) volumul de 0, 125 m cubi .

Answer 1

$a)un \: cub \: are \: 12 \: muchii$

$12l = 480 \: | \div 12$

$l = 40 \: m$

$b)V = 8 \: {m}^{3}$

$V = {l}^{3}$

${l}^{3} = 8 = > {l}^{3} = {2}^{3} = > l = 2 \: m$

$c)V = 0.125 \: {m}^{3}$

$V = {l}^{3}$

${l}^{3} = 0.125 = > {l}^{3} = {0.5}^{3} = > l = 0.5 \: m$

Answer 2

a)un cub are 12 muchii
12l=480|:12
l=40 m
b)V=8m^3
V=l^3
l^3=8=>l^3=2^3=>l=2m
c)V=0,125m^3
V=l^3
l^3=0,125=>l^3=0,5^3=>l=0,5
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