Respuesta :

jeffreytaing

Answer:

13.4

Step-by-step explanation:

use a^2+b^2=c^2

longest side=18 so c=18

other leg= 144

plug it in: 12^2+b^2=18^2

144+b^2=324

144+b^2=324-144

180 square root= 13.4

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