Answer:
5. 5.04 π
6. 6.16 π
Step-by-step explanation:
To find the arc length, use the equation:
arc length = radius times angle in radians
radius=4
You have to convert the angles from degrees to radians so to do this, you would multiply the angles by (pi radians)/180. Since your answering in terms of pi, just divide by 180.
Angle BC is 226 degrees. (Subtract 51+83 from 360.)
Angle ABC is 277 degrees. (Subtract 83 from 360.)
After converting to radians, you get:
BC = 1.26 pi radians
ABC = 1.54 pi radians
To find the arc length, multiply by the radius (4).
1.26 pi times 4 = 5.04pi
BC = 5.04 π
1.54 pi times 4 = 6.16 pi
ABC = 6.16 π
