What is the square root of Pythagoras?

Pythagoras was a Classical Greek mathemtician.

He gave us the equation.

h^(2) = a^(2)+ b^(2)

To take the 'square root (sqrt) of this equation we write.

sqrt[h^(2)] = sqrt[ a^(2) + b^(2) ]

or

h = sqrt[a^(2) + b^(2)]

Note the use of square brackets to indicate on the RHS that the sum of the squared numbered is square rooted.; NOT the individual numbers.

The Pyrthagorean Eq'n refers to Right-Angles triangles.

'h' is the hypotenuse ; the angle opposite the right angle.

'a' & 'b' are the two sides that make up the right angle.