Question

Find the square root of 0.8 upto two places of decimal

Answer 1

See the attach file for ur ans

Answer 2

Answer:

$\sqrt{0.8}=0.89$

Step-by-step explanation:

Given : Number $\sqrt{0.8}$

To find : The square root of 0.8 up to two places of decimal.

Solution :

Let $x=\sqrt{0.8}$

Squaring both side,

$x^2=0.8$

$x^2=\frac{8}{10}$

Multiply and divide by 10,

$x^2=\frac{80}{100}$

$x^2=\frac{(4\sqrt5)^2}{(10)^2}$

Now, Taking root both side,

$x=\frac{4\sqrt5}{10}$

$x=\frac{4\times 2.23}{10}$

$x=\frac{8.92}{10}$

$x=0.892$

Up to two decimal places $\sqrt{0.8}=0.89$