Question

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

Answer 1

6.283 mm

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

Answer 2

C≈6.28mm

Explanation:

C=2πr

= 2·π·1≈6.28319mm