Answer:
x = 12.1 in.
Explanation:
a² + b² = c²
7² + x² = 14²
49 + x² = 196
x² = 147
x = sqrt(147)
12.1
A^2+b^2=c^2
a^2+49=196
196-49=a^2
sqrt147=a
12.1=a
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