the lengths of your sides are:
x
x+2
x+4
The hypoteneuse is the always the longest side, use pythagoras' theorum
If you are completely stuck, read the spoiler
Spoiler:
The lengths of the sides of a right triangle are consecutive even integers , and the length of the shortest side is a x . which of the following equations could be used to find x ?
(A) x + x + 1 = x + 2
(B) x^2 + (x + 1)^2 = (x + 2)^2
(C) x^2 + (x + 2)^2 = (x + 4)^2
(D) x + x + 2 = x + 4
(E) x^2 = (x + 2)(x + 4)