Final answer:
To find the total length of wood Drew needs to make the sides of the square sandbox with an area of 225 square feet, we can calculate the side length by taking the square root of the area, which is 15 feet. Since a square has four equal sides, the total length of wood Drew needs is 60 feet.
Step-by-step explanation:
To find the length of wood Drew needs to make the sides of the sandbox, we need to determine the length of one side of the square sandbox. Since the area of the sandbox is given as 225 square feet, we can find the side length by taking the square root of the area. The square root of 225 is 15, so each side of the sandbox will be 15 feet long.
Since a square has four equal sides, the total length of wood Drew needs to make the sides of the sandbox is calculated by multiplying the side length by 4. Therefore, the total length of wood Drew needs is 15 feet x 4 = 60 feet.