The measurement that is closest to the amount of bracing she will need in inches is 6.7 inches.
Using Pythagorean theorem for
Let x represent the measurement
Hence
x=√3²+6²
x=√9+36
x=√45
x=6.708
x=6.7 inches (Approximately)
Therefore the measurement that is closest to the amount of bracing she will need in inches is 6.7 inches.
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