If the length of an arc is 12 inches and the radius of the circle is 10 inches, what is the measure of the arc?

216 degrees
270 degrees
288 degrees

Question

If the length of an arc is 12 inches and the radius of the circle is 10 inches, what is the measure of the arc?

216 degrees
270 degrees
288 degrees

anonymous · Answer

@campbell_st  whered that answer go?

wampominater · Answer

do you still need help?

anonymous · Answer

yes please...

wampominater · Answer

ok

wampominater · Answer

so, the first thing you need is the formula for arc length, which is 
$$arclength = 2piR(\frac{ \theta }{ 360 })$$

wampominater · Answer

now, look at the values you are given

wampominater · Answer

you have the arc length and the radius, so plug those in.

wampominater · Answer

and what do you get when you do that?

anonymous · Answer

where am i plugging the arc length into?

wampominater · Answer

look at the formula, see where it says arc length? you plug the value you have for arc length right there.

anonymous · Answer

yeah and i can plug in the radius too. but what am i solving for?|dw:1438157454848:dw|