Q:

Find the circumference of the circle. Use pi = 3.14. A. 3 m B. 18.84 m C. 6 m D. 28.26 m

Accepted Solution

A:
The first thing you should do for this case is to know the definition of the perimeter of the circle.
 The perimeter of the circle is:
 C = 2 * pi * r
 Where,
 r: radius of the circle.
 Substituting we have:
 C = 2 * (3.14) * (r).
 Another alternative way is:
 C = 2 * pi * (d / 2)
 rewriting:
 C = pi * d
 Substituting we have:
 C = (3.14) * d
 Where d is the diameter of the circle.
 Note: to complete the answer substitute the radius or the diameter of the circle in the given equations.
 Answer:
 C = (3.14) * d
 C = 2 * (3.14) * (r).