Respuesta :

don't quote me on this plz, but i think the answer is 54, hope this helps

Nikki1007
(a2+b2=c2). In this formula a and b are the legs of the right triangle while c is the hypotenuse. So the answer would be 15 because 9•9= 81 and 12•12= 144 81 +144= 225=15