prove that

Question:

1.4

We have, $\sqrt{1.96}=\sqrt{\frac{196}{100}}=\sqrt{\frac{14 \times 14}{10 \times 10}}=\frac{14}{10}=1.4$

Solution:

$1.728$

We have, $(1.2)^{3}=\left(\frac{12}{10}\right)^{3}=\frac{12}{10} \times \frac{12}{10} \times \frac{12}{10}=\frac{1728}{1000}=1.728$

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