Answer:
r = 22.3m circa
Step-by-step explanation:
We know that the perimeter of a circle can be calculated as follows:
p = 2[tex]\pi[/tex]r
So half of perimeter will be:
p/2 = [tex]\pi[/tex]r
We know that p/s = 70m, therefore:
r = 70m /[tex]\pi \\[/tex] = 22.3 m circa.
