Question

4. 7G4 - M

Kylie used wire fencing to form a border around a circular region in her back yard. If the
diameter of the circular region was 5 yards, what was the total length of the border,
rounded to the nearest tenth of a yard?
a.
15.7
b. 31.4
C. 78.5
d. 157.1

Answer 1

You need to find the radius. It is half the diameter
The radius is 2.5
C=2 pi r
C=2 times 2.5= 5. 5 times pi= 15.7
The answer is 15.7