Answer:
d = 16.97
Step-by-step explanation:
The triangle is a right triangle, so we can use the Pythagorean theorem.
a^2 + b^2 = c^2
where a and b are the legs of the right triangle, and c is the hypotenuse.
In this case, the legs are both 12 and the hypotenuse is d.
12^2 + 12^2 = d^2
d^2 = 144 + 144
d^2 = 288
d = sqrt(288)
d = 16.97
