Find the area ans the circumference of a circle with diameter 4m

Area:

The formula for the area of a circle is A=.  The problem gives the diameter (4); half of the diameter is the radius (r=2).

A=2π

A=6.2831m^2

Circumference:

The formula for the circumference of a circle is A=πd.

A=4π

A=12.5664m

Hope this helps!!

answer: the proof is mentioned below.

step-by-step explanation:

since, given:   lines bc = ef

prove:   lines ac > ef

          statements                                           reason

1. bc=ef                                           1. given

2. ac= ab+bc                                 2. because b is the point between the  

                                                            line segment ac

3.   ac > bc                                       3. because if a line segment is equal to

                                                          the sum of two line segments then it is

                                                          always greater then each of these

                                                          individual line segments

4. ac > ef                                         4. by equality property.

true

step-by-step explanation:

it is more then likely a review to you prepare for an upcomign test or quiz