Question

what is the length of the hypotenuse of a right triangle that has legs with lengths of 5 and 4?
1) square root of 49
2) square root of 41
3) square root of 47
4) square root of 51

Answer 1

apply Pythagorean theorem \[\huge\rm a^2 +b^2 =c^2\]
plug in a b value solve for c
c is the longest side of righttraingle which is hypotenuse