25.12 dah
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The perimeter of a circle is called its "circumference". Its length is the diameter multiplied by (pi). 8 pi = 25.133 (rounded)
25.12. Circumference= pi (3.14) multiplied by 8 (diameter.)
Because the circumference is equal to the diameter multiplied by pi or the radius multiplied by 2*pi.
The answer is 12.56
24.492, unless you want more digits of pi besides the standard 3.14. The circumference of a circle is equal to the diameter multiplied by pi, or the radius multiplied by two, then multiplied by pi. c = d*pi c = 2*r*pi c = circumference d = diameter r = radius pi = 3.141593