Find the circumference of this. Radius= 2.5 centimeters. Round to the nearest hundredth

Circumference of a cicle in terms of radius:

Circumference = 2·π·r = 2·3.14·2.5 = 15.7(*)

In terms of diameter:

Circumference = π·d = 3.14·5 = 15.7(*)

In terms of area:

Circumference C = √4·π·A = √4·π·19.63 = 15.7(*)

Answer?→(*) 15.71

Note: for simplicity, the operations above were rounded to 2 decimal places and π was rounded to 3.14.

Ok You're probably here from K12 so heres the

Conclusion: If a polygon undergoes a rigid transformation, then the image and pre-image have equal perimeters.

I just took the test and got this right, I'm a K12 student as well.

Hope this helps :)