Find the area of ​​a sector whose central angle is 0 120 in a circle of radius 9 cm

Answer 1

Use formula:

area sector = central angle

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area circle 360 degrees

for radius = 9 cm, area of circle = PI* R^2 = 254.34

area of sector = 120

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254.34 360

area of sector = 1

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254.34 3

3*area of sector = 254.34

area of sector = 84.78 cm^2