Please help answer plz

Answer:
Step-by-step explanation:
20 times square root of 2.
The other leg, y is equal to 20 because in 45-45-90 triangles, the legs are congruent.. We can apply 45-45-90 rules to find x. The hypotenuse is sqr root of 2 times more than the legs, so the answer is 20 times square root of 2.