elliexmontague elliexmontague
  • 21-11-2020
  • Mathematics
contestada

Find the area of this sector.
19cm length on side 118degree angle in centre

Respuesta :

mhanifa
mhanifa mhanifa
  • 23-11-2020

Answer:

  • 87.68 cm²

Step-by-step explanation:

Arc length:

  • 118*2πr/360 = 19 cm
  • 118*3.14r/180 = 19
  • r = 19*180/118*3.14
  • r = 9.23 cm

Area of sector:

  • A = πr²*118/360
  • A = 3.14*9.23²*118/360
  • A = 87.68 cm²
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