Question

what is the circumference of a circle that has a diameter of 4 units please explain in proper way Mark as brainliest for the best answer and 20 points

Answer 1

we know,
diameter=2r
so here diameter=4
therefore r=4/2=2units

circumference =2πr
=2×3.14×2
12.56




OR
CIRCUMFERENCE=πD. (DIAMETER)
=3.14×4
=12.56

Answer 2

Given Diameter = 4 units.

We know that Radius = d/2

                                     = 4/2

                                     = 2cm.


We know that Circumference of a circle = 2pir

                                                                   = 2 * 22/7 * 2

                                                                    = 88/7

                                                                    = 12.57.



Hope this helps!