The surface area of a sphere with radius 4 is about 201 units2
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Surface area of a sphere = 4*pi*radius2 radius = diameter/2
Surface area of a sphere = 4*pi*radius2
Surface area of a sphere = 4*pi*radius2 Surface area = 16*pi = 50.26548246 or 50 square inches.
1500pi
201.06 inches2