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Pie chart (circle graph)  A special chart that uses "pie slices" to show relative sizes of data.Continent  Area(millions of km^{2}) 








Continent  Area(millions of km^{2})  In Fraction  Central angle 


(30 /80) = 3/8  (3 / 8)x 360 = 135^{0} 


(25 /80) = 5/16  (5 / 16)x 360 = 112.5^{0} 


(5 /80) = 1/16  (1 / 16)x 360 = 22.5^{0} 


(20 /80) = 1/8  (1 / 4)x 360 = 90^{0} 
Total >  