Question

What is the measure of the indicated central angle?

Answer 1

do you know the formula for the length of an arc, given the radius and central angle?

Answer 2

No I don't

Answer 3

i don't remember it but i can try.

Answer 4

i think arc length/circum=arc measure/360

Answer 5

so 6pi/pi(15)^2=x/360 and you just cross multiply or fish :)

Answer 6

\[\theta = \frac{ l }{ 2\pi r } \times 360\]

l is the length of the arc..

Answer 7

I'm sorry, I just never re-called a formula for that in my lessons, but I'm sure there has to be 1, thank you!

Answer 8

so you multiply 360 by 6pi and then divide by 2pi15