Question

The circumference is __

Answer 1

C=4(pi)

Explanation:

formula is C=2(pi)r

there’s no key for pi so insert the symbol where the (pi) is

Answer 2

As we know that there is a radius which is 2 cm

so

circumference = 2 π r

= 2 * 22/7 * 2

= 12.57cm

it's circumference is 12.57 cm