Question

A square with sides 8 cm is drawn. What is the length of a diagonal of the square?

Answer 1

to find out the diagonal of a square

Apply Pythagorean Theorem

d^2=8^2+8^2

d^2=128

$d=\sqrt[\square]{128\text{ cm}}$

simplify

$d=8\sqrt[\square]{2\text{ cm}}$