Question

please help me find this arc length?

Answer 1

The area of sector JLK in Circle L is 3pi in^2. Find m arcJK.

Answer 2

First find the angle using the formula (theta/2pi)*pi*r^2

Answer 3

Idk what theta is.

Answer 4

theta is the angle you have to find

Answer 5

Since arc length is '(theta/2pi)*pi*r' :)

Answer 6

Did you get it?

Answer 7

I got 18

Answer 8

@KissMyAxe

Answer 9

18 what?

Answer 10

The angle.

Answer 11

exactly 18

Answer 12

Yes

Answer 13

I think it is 0.52 radians

Answer 14

I'm confused. Can you show me how to work it out? I understand better that way.

Answer 15

okay

Answer 16

Do you know the final answer?

Answer 17

No

Answer 18

So to find the angle it would be:
(theta/2pi)*pi*r^2= 3pi in^2
on the LHS pi's cancel and we are left with:
(theta/2)*r^2= 3pi in^2
let me know if you have any problem up till here

Answer 19

Where did you get 3pi in^2?

Answer 20

Well that's the are of sector, right?

Answer 21

*area

Answer 22

My book didn't have that in it. I couldn't find the word theta either. It must be a further lesson.

Answer 23

I understand what you've done so far in the problem though.

Answer 24

What are you going to rant about

Answer 25

?

Answer 26

Its nothing!

Answer 27

Well here in A-levels we call the the angle theta. What do you guys call it?

Answer 28

.....All I was saying was the reason I didn't know what you were talking about was because my book didn't teach me it.

Answer 29

I don't know why you spazzed..

Answer 30

U were taking along time to answer :P

Answer 31

Anyways we have to find the angle or theta

Answer 32

Okay... I understand what you did so far in the problem.

Answer 33

So angle= (2*3pi)/6^2

Answer 34

Did you get this?

Answer 35

Yes, .52

Answer 36

Okay than we use the formula 'Arc length= r*angle' Since the angle is in radians this formula is a simplified one

Answer 37

3.12?

Answer 38

Yes

Answer 39

Okay, thanks.

Answer 40

That was coming!

Answer 41

Are you trying to solve @mathmath333