Question

what is the length of the edge of a cube whose volume is 729 cm^2

Answer 1

edge of cube =3√729
=edge = 9

Answer 2

hy

${a}^{3} = volume \: of \: cube \\ {a}^{3 } = 729 = a = \sqrt{729 }$
$a \: = \sqrt{9 \times 9}$
a =9

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hope helped