Question

The square root of 1.96 equals to

• A. 1.44
• B. 1.4
• C. 1.24
• D. 1.34

Answer 1

The correct option is B

1.4

The given expression is $\sqrt{1.96}$

$\sqrt{1.96}$

$=\sqrt{\frac{196}{100}}$

$=\frac{\sqrt{196}}{\sqrt{100}}$

$=\frac{\sqrt{2\times 2\times 7\times 7}}{\sqrt{2\times 2\times 5\times 5}}$

$=\frac{\sqrt{2^2\times 7^2}}{\sqrt{2^2\times 5^2}}$

$=\frac{2\times 7}{2\times 5}$

$=\frac{14}{10}=1.4$