Answer:
it is the 1st one.
Explanation:
The pythagorean theorem is
, a and b standing for the two legs and c stands for the hypotenuse (slanted line connecting the two). Since
and
, we add 4 and 9 to get 13. Since 3 is already squared, we can look at it like
. Therefore, the first answer, "2,3,
", is correct. Hope this helped!! :]