The surface area of a sphere with a radius of 7 is about 615.8 units2
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Surface area of sphere: 4*pi*7^2 = 196*pi square cm
The surface area of the sphere with the radius doubled is 200 units2.---> Confirmed
The area of a sphere with radius 'R' is [ 4 pi R2 ].
They can be: volume, surface area, radius, diameter, circumference, axis and its hemisphere
The surface area of a sphere with a radius of 2 is about 50.27 units2