Final answer:
To find the length of each side of the square patio with an area of 215 square feet, take the square root of 215. The length of each side is approximately 14.66 feet.
Step-by-step explanation:
To find the length of each side of the square patio, we need to calculate the square root of the area of the patio. Given that the area of the patio is 215 square feet, we can find the length of each side by taking the square root of 215. Using a calculator, the square root of 215 to the nearest 0.05 is approximately 14.66 feet.