Jason used wire fencing to form a border around a circular region in his back yard. If the radius of the circular region was 5 yards, what was total length of the border, rounded to the nearest tenth of a yard?

The total length of the border is 31.4 yards rounded to the nearest tenth of a yard

Step-by-step explanation:

The formula of the circumference of a circle is C = 2πr, where r is the radius of the circle

Jason used wire fencing to form a border around a circular region in his back yard

That means the length of the wire is equal to the circumference of the circular region

∵ The radius of the circular region was 5 yards

∴ r = 5 yards

∵ C = 2πr

- Substitute r by 5

∴ C = 2π (5)

∴ C = 31.41592654 yards

- Round it to the nearest tenth of a yard

∴ C = 31.4 yards

∵ The length of the wire is equal to the circumference of

the circular region

∴ The length of the wire is 31.4 yards

The total length of the border is 31.4 yards rounded to the nearest tenth of a yard