Question

The radius of a circle is 2 units.what is it’s circumference

Answer 1

Answer:

see below

Step-by-step explanation:

The circumference of a circle is given by

C = 2 * pi *r

C = 2 * pi *2

C = 4pi

Let pi = 3.14

C = 4 * 3.14

C =12.56

Using the pi button

C =12.56637061

Answer 2

Answer:

12.571428...units or $\frac{88}{7}$

Step-by-step explanation:

Circumference of a circle= $2\pi r$

Radius(r)= 2 units

∴Circumference= $2*\frac{22}{7}*2 units$

                            = $\frac{88}{7} units$

                            = 12.571428.....units