Respuesta :

itsjustcaili
so Pythagorean Theorem is a^2+b^2=c^2

So, 12^2+16^2= 400
c=400, but you need to find c^2. so do the square root of 400, which is 20. so x=20
The answer should be 20 because you sue the formula a^2  + b^2= C^2
so you input 12^2+ 16^2=x^2
                       144 + 256 =x^2
                       400=x^2
                            20

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