Question

length of the diagonal of a square whose side is 4 cm

A)4 root 2 cm B)8 root 2 cm C) 8 cm D) 16 cm

Answer 1

as diagonal of a square whose side is x is =
.

so in this case the answer is 4 x
$\sqrt{2}$
this is because as you know the sides of the square are perpendicular to each other so you get a right angle triangle and you let the side Be X using Pythagoras Theorem you can see that the hypotenuse or the diagonal is x root2