Question

Please tennetiraj86 please answer this I will Mark you brainlist​

Answer 1

10√2 cm

Explanation:

Given -

Side of a square = 10 cm

To find -

The diagonal of square

Solution -

We know that,

Diagonal of square = √2 × side of square

= √2 × 10 cm

=> 10√2 cm

hope it helps.

Answer 2

Explanation:

The side of square is 10 cm

In right angled △ABD

${ab}^{2} + {ad }^{2} = {bd}^{2}$

according to Pythagoras theorem]

$( {10}^{2} ) + ( {10}^{2} ) = {bd}^{2}$

$100 + 100 = {bd}^{2}$

${bd}^{2} = 200$

$bd = 10 \sqrt{2}$

$therefore \: diagonal \: of \: a \: square \: = 10 \sqrt{2}$