6.5'
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78 inches in 9 feet = 78 inches in 108 inches = 13/18 = 0.722...
78/12 = 6.5 feet
There are 12 inches in one foot. Therefore, 78 feet is equal to 78 x 12 = 936 inches.
78 inches is equal to 6 and a half feet
The answer is 6.53 feet.