Question

FIND THE ARC LENGTH OF THE MAJOR ARC. (Let me attach the file first)

Answer 1

This is the picture that goes with my question

Answer 2

@Purplerainbowcherry can you help me with my question when you get the chance

Answer 3

I will award medal @Purplerainbowcherry

Answer 4

PLEASE HELP ME OUT

Answer 5

ok @gswag98 are you there?

Answer 6

YES

Answer 7

so for the major arc the angle at centre is 240 correct?

Answer 8

we use the circumference formula times the angle at centre on 360

Answer 9

Ok what's next

Answer 10

thats it
do pi x 2 x radius x 240/360 what do you get?

Answer 11

What is the radius

Answer 12

8 its in the diagram

Answer 13

The answer I got was 33.51032164

Answer 14

Hello

Answer 15

Yes sorry it is correct

Answer 16

What would the answer look like rounded to 2 decimal places @Purplerainbowcherry

Answer 17

33.51

Answer 18

2dp

Answer 19

I got around 33.49

Circumference= 3.14 x 16= 50.24
Becuz C=pi(d) where d is 16 because d=2 x radius

360-120=240- the measure of the major arc
240/360=2/3

So major arc = 2/3 (50.24) which gives u 33.49333333 in your calculator

Answer 20

so to find arc length of major arc the formula is l = r(thetha), where r = 8, theta = 360-120 = 240 or 4pi/3

so therefore 8 x 4pi/3 = 32/3 pi

= 33.51 (2dp)

Answer 21

@phi can you help me with my question whenyou get thechance

Answer 22

What did you try for an answer so far?

Answer 23

Well @pecovski and@nikato gave me answers that weren't right @phi

Answer 24

Hello @phi

Answer 25

exactly what is the question? Did they ask you to use a specific value for pi ?

Answer 26

My question has been already asked I if you don't see it just scroll up

Answer 27

Did they ask you to use a specific value for pi ?

Answer 28

If they told you to use 3.14 for pi that makes a difference (as compared to using 3.14159)

also, *exactly* what did you enter as your answer?

Answer 29

My question has been already asked I if you don't see it just scroll up

Answer 30

@phi they tell me to use pi

Answer 31

Do they ask you to round the answer? If so , how many digits?

Answer 32

They ask me to round to 2decimal places

Answer 33

and what # did you enter as your answer?

Answer 34

The answers posted above are correct, and only differ in accuracy.
So we have to figure out *exactly* what your program is expecting for an answer.

And to do that we need to know *exactly* what you have typed in so far that did not work.

Answer 35

@phi I typed @nikato 's answer and @pecovski 's answer 1 at a time and they were both wrong

Answer 36

the length of the major arc (with central angle 240º) , rounded to 2 places is 33.51
If that is not accepted, then you should ask your teacher about this one.