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Cubes and Cube Roots — Maths STD 8 — Question

Maharashtra BoardEnglish MediumSTD 8MathsCubes and Cube Roots1 Mark
Question
Find the cube of:
1.5
✓

Answer

We have:
$​1.5=\frac{15}{10}$
Also, $\Big(\frac{\text{m}}{\text{n}}\Big)^3=\frac{\text{m}^3}{\text{n}^3}$
$\therefore\Big(\frac{15}{10}\Big)^3$
$​​=\frac{15^3}{10^3}$
$=\frac{15\times15\times15}{10\times10\times10}$
$=\frac{3375}{1000}$
$=3.375$

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