Respuesta :

21 is the hypotenuse
ayookeshy
A^2 + B^2 = C^2

So...

5^2 + 12^2 = C^2

5x5 = 25
12x12 = 144

25 + 144 = C^2
C^2 = 169

Then you square root 169 and the hypotenuse is 13

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