Question

The radius of a circle is 1 mm. What is the circle's circumference? ​

Answer 1

Answer:

C≈6.28mm

Step-by-step explanation:

C=2πr

= 2·π·1≈6.28319mm

Answer 2

Answer:

6.283 mm

Step-by-step explanation:

the equation for circumference is 2$\pi$r

if the radius is 1 then insert it

c=2$\pi$(1)

c=6.283 mm