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Surface area of a sphere = 4*pi*radius2 in square units.
The surface area of a sphere in square units = 4*pi*radius2
Surface area of a sphere = 4 (pi) radius2 and measured in square units For a radius of 4.75, the surface area is 4 (3.1416) (4.75)2 = 4 (3.1416)(22.5625) = about 283.53 square units
4 square cm
It is: base area+(4*triangle areas)