The sum of the squared legs must give the squared hypotenuse:

But of course we can only accept the positive solution, because
is a length and can't be negative.
Which problem I don’t see any problem hear
Answer:
a) never true
Step-by-step explanation:
a radius is always half of a diameter
Answer:
40 divided by 100 to get .4 times 85 to get 34
Step-by-step explanation:
what multiplied by what is 15 but added together is 8
......................................................
Answer: a