Answer:
9.7 m
Explanation:
You want the missing side of the right triangle with one leg 7 m and hypotenuse 12 m.
Pythagorean theorem
The Pythagorean theorem tells you the relationship between the side lengths is ...
y² = x² + ?²
12² = 7² + ?²
?² = 144 -49 = 95
? = √95 ≈ 9.7
The missing side is about 9.7 meters long.
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