Respuesta :

amoscastor

Answer:

Y = 4

Step-by-step explanation:

12 - 8 = 4  and if you put another triangle it will look like a complete square, so you will need to subtract it     Hope it Helps  

ejhaine1
The answer is 9

EXPLAINING!
c squared - a squared = b squared
c=12 and a=8
12x12=144 and 8x8=64
144-64=80
find the square root and that makes 9
hope that helped!