The surface area is 201.1 units2
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Surface area of a sphere with radius r = 4(pi)r2
Surface area of a sphere = 4*pi*radius squared
The surface area of a sphere with radius 4 is about 201 units2
The surface area of any sphere is (4 pi) x (radius)2 So the surface area of this particular sphere is (4 pi) x (10)2 .
If the surface area of the sphere is 4 m2, the radius is 0.5642 metres, approx.