Question

Can someone plz help me with circumferences and connecting models? Question In the comments

Answer 1

The illustration is a good model for which formula?



A.
A = 2πr

B.
C = πd

C.
A = πr2

D.
C = πd2
https://static.k12.com/calms_media/media/1472500_1473000/1472774/1/77cb85606f371de375f6bdef20d386a50483352c/TXMTH07-140304-110903.jpg

Answer 2

First, you should look at what is given in the picture. @stylesprettygirl can you tell me everything that you see in this purple circle?

Answer 3

Radius and a a

Answer 4

Correct. Now, the A signifies Area. Therefore, this gives us an indirect that we are looking for Area.

Answer 5

So does that narrow my choices to a or c?

Answer 6

Yes.

Answer 7

so how do I find the rest from here?

Answer 8

All you have to do is recall the formula for Area of a circle. One of the answer choices that we're left with doesn't match.

Answer 9

Basically, in order to figure this out, just find what the formulas are and memorize them for future usage

Answer 10

can you tell me the formula?

Answer 11

I think the answer is c because the radius is half of the diameter

Answer 12

Only if you're absolutely sure that you cannot find them yourself/

Answer 13

If you google "area of a circle," you'll see that you've made the correct choice. Well done

However, I also want you to google "circumference of a circle." This was the formula that was given in choice A.

Answer 14

Thank you I might need some more help is it ok to @ you?

Answer 15

Sure. Just ask a new question, as one thread can become laggy after some time.

Answer 16

Also, close this thread if you could :) Thank you