Respuesta :

blessingpotego279

Answer:

C

Step-by-step explanation:

(Hypotenuse)²=(side 1)²+ (side 2)²

(15)²=(12)²+ a

225=144 + a

225 - 144 = a

81 = a

Square both sides which will become 9 =a

Therefore c is equal to 9 cm