To this question, we have to apply the Pythagorean Theory. a-square+b-square+c-square. We know that the side which says, the square root of 3, it would just be 3. The Hypotenuse is 6. So we apply the formula reverse. 3+n= 36, because 6 squared. 36-3= 33. The square root of 33 is 5.74456264654