Question

Find the measure of the central angle. (Let me attach the file first)

Answer 1

attachment that goes with this question @IMstuck @nikato

Answer 2

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

Answer 3

circumference is equal to 2*pi*r
meaning that 9 = 2*pi*r
so you find r which turns out to be 1.43

length of an arc is found be multiplying x with the radius,
meaning that 1 = 1.43x
so x = 0.7 radians

Answer 4

Thanks @Purplerainbowcherry

Answer 5

No @Purplerainbowcherry my program said "caution your answer is incorrect"

Answer 6

does it want the answer in degrees or radians?

Answer 7

Degrees

Answer 8

so you have to multiply by 180/pi

Answer 9

and you would get 40.1 degrees

Answer 10

They also want the answer rounded to 2 decimal places

Answer 11

40.11 then :)

Answer 12

or wait hold on, i rounded my r in the beginning

Answer 13

you get 40.00 without any rounding done for r

Answer 14

Nope that's not answer either my program said "Try Again" not 40.1 @Purplerainbowcherry

Answer 15

40.0 not 40.1

Answer 16

The whole circumference of the circle is 9. The arc length is 1.


So the arc length is 1/9 of the whole circle's perimeter.


That means x is 1/9 of 360 degrees (a full revolution)


1/9 of 360 = (1/9)*360 = 40


Which means x is 40 degrees

Answer 17

I was just replying of when u gave me the answer 40.1

Answer 18

oh sorry, i updated the answer after that

Answer 19

Ok thank you @Purplerainbowcherry

Answer 20

you're welcome