The surface area of a sphere with a radius of 12 units is about 1,809.6 units2
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The surface area of a sphere with radius 6 is: 452 square units.
Surface area of the sphere: 4*pi*52 = 100*pi square units
If its radius is 6, then the surface area of the sphere is: 4*pi*6*6 = 144*pi square units.
1024pi units2
Surface area = 20*pi square units