Question

if a side of a square has length 14 the length of a diagonal of the square is?

Answer 1

14SQRT(2)

Answer 2

the formula is diagonal of square=side* sqrt(2)

Answer 3

Using pythagoras theorem
Square on the hypotenuse (in this case the diagonal) = sum of the square of the other two sides.
So square the side, double it, and then get the square root of it
14x14 = 196
196 x 2 = 392
\[\sqrt{392}\]= 19.8 to one decimal place