Answer:
C. 6
Explanation:
C.
The equation should be...
a^2 + b^2 = c^2
x^2 + (x+3)^2 =10.81665383^2
When you plug it in...
6^2 + (6+3)^2 = 117
6^2 + (9)^2 = 117
36 + 81= 117
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