A circle has a diameter of 10 cm. What is the best approximation of its area? Use 3.14 for piyou need radius not diameter in the formula! (Hint: A = π r2 ) 78.5 sq cm

314 sq cm

31.4 sq cm

15.7 sq cm

If it has a diameter of 10, divide it by 2 to get Radius (5) because Area = πr²

Then you do r * π *r which would be 78.5. so C is your answer.

Step-by-step explanation:

well kind of. you get friend requests. and you can accept them or not so yes.

step-by-step explanation:

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.