NCCER/OSHA Scaffold SG Practice Test

To determine the perimeter of a square structure, you can use the formula for the perimeter, which is the sum of all the sides. In this case, each side of the structure measures 30 feet. Since a square has four equal sides, you can calculate the perimeter by multiplying the length of one side by the number of sides:

Perimeter = 4 × length of one side.

Inserting the given length:

Perimeter = 4 × 30 feet = 120 feet.

Therefore, the correct answer is 120 feet, which corresponds to the choice provided. Understanding how to calculate the perimeter using this formula is essential, especially in construction and safety practices, as it aids in planning and ensuring materials are sufficient for the project.