Find: A = area of segment
of a circle
Given:
D= 16 cm
Central angle: 80º
Formula:
Where: N is the
central angle
R = 8 since ½ of the
diameter is the radius of the circle
A = (N / 360º) π r²
A = (80º / 360º) (3.1416
x (8cm)²)
A = (80º / 360º) (3.1416
x 64 cm²)
A = (80º / 360º) (201.0624
cm²)
A = 0.222 (201.0624 cm²)
A = 44.68 cm²
Therefore the answer
is A = 44.68 cm²
