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Answer:
5.06 ft
Step-by-step explanation:
The ladder, the floor, and the wall form a right triangle.
One leg measures 6.2 ft. The hypotenuse measures 8 ft. We are looking for the height which is the other leg.
a² + b² = c²
a² + (6.2 ft)² = (8 ft)²
a² = 64 ft² - 38.44 ft²
a² = 25.56 ft²
a = 5.06 ft