Problema Solution
billy plans to put some plastic edging around his circular fish pond. the diameter of the pond is 5 meters. round the answer to the nearest whole-number unit. find the amount of plastic edging that billy will need
Answer provided by our tutors
the length of the plastic edging is equal to the circumference of the circle C with diameter of d = 5 meters:
d = 5 m
r = the radius of the circle
we know that d = 2r thus we have 2r = 5 m
C = 2*r*pi
C = d*pi
C = 5pi
pi = 3.14
C = 5*3.14
C = 16 m rounded to units
Billy needs 16 meters of plastic edging.