Answer :

nermay7

Answer: x= 21.6

Step-by-step explanation:

12^2  + 18^2  =x^2

144 + 324 =x^2

468  = x^2

c=  21.633  

To the nearest tenth place  is c= 21.6

mcool1166
12^2 + 18^2 = x^2

answer: 21.63

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