Question

12) Circumference of circle = ____________​

Answer 1

Answer:

$2\pi \: r$

is the formulae

Answer 2

Answer:

Step-by-step explanation:

Radius of circle = r

Therefore, circumference of circle=2πr

For eg:

Radius = 7 cm

Circumference of circle = 2πr

=2x22/7x7cm

=44 cm