A circle has a radius of 9. An arc in this circle has a central angle of 120°.

Hi there!

For this problem we can use the formula for arc length below:

arc length = 2 π r (θ/360)

So if we input the information you have we get:

arc length = 2 π (9) (120/360)  

which gives us the result below:

arc length = 18.85

Step-by-step explanation:

18.8   3sf

calculations =18.84956

Step-by-step explanation:

arc length = radius multiplied by the central angle (in radians).

2 pi 9 / 2pi  = 56.5486677646/ 6.28318530718 = 18.8

yes

step-by-step explanation:

so of course you want to start by plugging the 5 in which goes to 7(5)+3(5)=50 because 7*5=35 and 3*5=15 and then add them together, then plug in the 5 to the other equation as well 9(5)+5=50 because 9*5= 45 and then add 5 and so yes they are equivalent.