Question

How do I solve this ?

Answer 1

J 36

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