Question

What is the length of the hypotenuse of a right triangle if each of the two legs is 4 units?

Answer 1

Use the pythagorean theorem (a^2 + b^2 = c^2)

4^2 + 4^2 = c^2

16+ 16 = c^2

32 = c^2

sqrt(32) = c

The third option you have listed is the right answer (its 4sqrt(2) simplified)