Malia is placing a barrier around the edge of a circular path with the diameter of 13 m the barrier are in length of 2.5 m. what is the best approximation of how many pieces of a barrierd malia will need? used 3.14 for approximate for pi

The circumference of a circle of diameter 13 m is 13π m, about 40.82 m.

(40.82 m)/(2.5 m) = 16.328

16 may be the best approximation of the number of pieces Malia will need. 17 pieces will make a barrier that is longer (larger diameter) than is needed.