If the legs of an isosceles right triangle have a length of 15 root 2 ft. the hypotenuse will have a length of ? ?
(its not multiple choice)

Consider u = {x|x is a negative real number}which is an empty set? o {x|x eu and x has a negative cube root}o {x|x eu and x has a negative square root}{x|x eu and x is equal to the product of a positive number and -1}{x|x eu and x is equal to the sum of one negative and one positive number?