What is the length of leg "s" of the triangle below?

a. 5√2
b. 10√2
c. 5
d. 1
e. 10
f. 5.6

(picture below.)

"10" is the one among the following choices given in the question that gives the length of the leg "s" of the triangle below. The correct option among all the options that are given in the question is the fifth option or option "E". I hope that this is the answer that has actually come to your desired help.