The surface area of a sphere can be calculated with the formula: A = 4[pi]r2
Plug in r:
A = 4[pi](8)2
And solve:
A = 256[pi]
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The surface area of a sphere with a radius of 2 is about 50.27 units2
The surface of a sphere is calculated pi*d2 or 4 *pi*r2 So if you have a sphere with diameter 8 (units) the area is 804.25 inches squared
The surface area of the sphere with the radius doubled is 200 units2.---> Confirmed
The surface area of a sphere with a radius of 7 is about 615.8 units2
a. 2 to 5.