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Cubes and Cube Roots — MATHS STD 8 — Question

ICSE BoardEnglish MediumSTD 8MATHSCubes and Cube Roots3 Marks
Question
Find the cube of: $2 \frac{1}{2}$
✓

Answer

$ 2 \frac{1}{2}$
$ =\left(2 \frac{1}{2}\right)^3$
$ =\left(\frac{5}{2}\right)^3$
$ =\frac{5 \times 5 \times 5}{2 \times 2 \times 2}$
$ =\frac{125}{8}$
$ =15 \frac{5}{8}$

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