Question

$\sqrt{1.69} = \boxed{}$

Explanation:

Step1: Recall square of 1.3

We know that \(1.3\times1.3 = 1.69\), which can be written as \(1.3^2=1.69\).

Step2: Apply square - root property

By the definition of square - root, if \(x^{2}=a\) (\(a\geq0\)), then \(\sqrt{a}=x\) (for the principal square - root, we take the non - negative value). Since \(1.3^{2} = 1.69\), then \(\sqrt{1.69}=1.3\).

Answer:

\(1.3\)