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Cubes and Cube Roots — MATHS STD 8 — Question

Gujarat BoardEnglish MediumSTD 8MATHSCubes and Cube Roots1 Mark
Question
Find the cube of: $1.5$
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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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