Final answer:
To find the perimeter of a square garden, you need to know the length of one side of the square. Given the area of the square garden is 345 square feet, you can find the length of one side by taking the square root of the area. Then, multiply the length of one side by 4 to find the perimeter.
Step-by-step explanation:
To find the perimeter of a square garden, we need to know the length of one side of the square. Given the area of the square garden is 345 square feet, we can find the length of one side by taking the square root of the area. So, √345 ≈ 18.57 feet. Since the garden is a square, all sides are equal, and the perimeter is 4 times the length of one side. Therefore, the perimeter is 4 × 18.57 ≈ 74.28 feet.