Question

Calculați lungimea laturii unui cub care are volumul egal cu: a) 27 cm cubi; b) 0,008 m cubi; c) 64 dm cubi.

Answer 1

$a)V = 27 \: {cm}^{3}$

$V = {l}^{3}$

${l}^{3} = 27$

${l}^{3} = {3}^{3} = > l = 3 \: cm$

$b)V = 0.008 \: {m}^{3}$

$V = {l}^{3}$

${l}^{3} = 0.008$

${l}^{3} = {0.2}^{3} = > l = 0.2 \: m$

$c)V = 64 \: {dm}^{3}$

$V = {l}^{3}$

${l}^{3} = 64$

${l}^{3} = {4}^{3} = > l = 4 \: dm$