Final answer:
The total length of the suspension bridge is 742.5 ft.
Step-by-step explanation:
To find the total length of the suspension bridge, we need to determine the lengths of the sections on each side of the river and add them together. Given that 30% of the bridge is on one side and 25% is on the other side, we can calculate the lengths as follows:
Length on one side = 30% of total width = 0.30 * 1350 ft = 405 ft
Length on the other side = 25% of total width = 0.25 * 1350 ft = 337.5 ft
Total length of the suspension bridge = Length on one side + Length on the other side
= 405 ft + 337.5 ft
= 742.5 ft