Question

the total surface area of a cube is 54 cm^2 what is the length off its side

Answer 1

$total \: surface \: area \: = 6 {l}^{2}$

$54 = 6 {l}^{2}$

${l}^{2} = \frac{54}{6}$

${l}^{2} = 9$

$l \: = \sqrt{9}$

$l = 3$

the length of each side will be 3 cm