I'm guessing you want the circumference and area of a circle that has a radius of 5 meters? circumference = 2 * PI * r circumference = 2 * PI * 5 circumference = 10 * PI = 31.14159 meters
area = PI * r^2 area = 3.14159 * 5^2 area = 3.14159 * 25 area =
78.53982 square meters