Final answer:
The possible lengths for the third side of the triangle are 54 ft and 47 ft.
Step-by-step explanation:
To find the possible lengths of the third side of a triangle with lengths of 45 ft and 9 ft, we can use the triangle inequality theorem. According to the theorem, the sum of the lengths of any two sides of a triangle must be greater than the length of the third side.
In this case, the sum of the two given sides is 45 ft + 9 ft = 54 ft. Therefore, the possible lengths for the third side of the triangle are:
- 54 ft
- 47 ft