Answer:
J 36
Step-by-step explanation:
AB = 9, BC = 12, and m∠B = 90°. Since this is a right triangle, we can use Pythagorean theorem to find AC.
c² = a² + b²
c² = 9² + 12²
c = 15
So the perimeter is:
P = 9 + 12 + 15
P = 36
