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A Square and A Cube — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSA Square and A Cube1 Mark
Question
Find the cube roots of these numbers : $\sqrt[3]{729}=$
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Answer

$\sqrt[3]{729}$
$\begin{array}{l}729=(3 \times 3 \times 3) \times(3 \times 3 \times 3) \\=3^3 \times 3^3 \\=(3 \times 3)^3=9^3 \\\therefore \sqrt[3]{729}=9 .\end{array}$

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