DragonWolf23 DragonWolf23
  • 10-04-2018
  • Mathematics
contestada

For circle O, sector AOB has radius 12 and ∠AOB measures 120°. What is the length of arc AB?
A. 4π units
B. 8π units
C. 12π units
D. 16π units

Respuesta :

wolf1728
wolf1728 wolf1728
  • 10-04-2018
arc length   =   circumference • [central angle (degrees) ÷ 360]
r = 12
circumference = 75.3982236862 or 24 PI units

arc length   =   24 PI * [120 / 360]

arc length = 8 PI
Answer is B
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