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Question
Find the cube of 1.5 .
Sum
Solution
We have: \[1 . 5 = \frac{15}{10}\]
Also,
\[\left( \frac{m}{n} \right)^3 = \frac{m^3}{n^3}\]
∴ \[\left( \frac{15}{10} \right)^3 = \frac{{15}^3}{{10}^3} = \frac{15 \times 15 \times 15}{10 \times 10 \times 10} = \frac{3375}{1000} = 3 . 375\]
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