I will give brainliest if you get this right
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Answer:
Approximately 8.5 feet
Explanation:
Using Pythagorean Theorem we can say:
6² + 6² = Diagonal²
36 + 36 = Diagonal²
72 = Diagonal²
[tex]\sqrt{72}[/tex] = Diagonal
8.49 (if rounded to the nearest tenths it would be 8.5) = Diagonal
Hope this helps!