If that is the radius, use the formula: volume = (4/3) pi r3. If that is the diameter, divide it by 2 first, to get the radius.
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The volume of a two-inch diameter sphere is = 1.3333π or 4.1887 cubic inches.
The new volume is 76.566 cubic inches.
Volume of sphere: 4/3*pi*5*5*5 =53.0516477 cubic units
The volume of a sphere is 4/3*(Pi)*(r3), so V = 1.33*Pi*53 = 523.598776. The volume of the sphere is about 523.6 cubic units.
surface area sphere = 4πr² → r = √(surface_area/4π) = √(1296π in²/4π) = √(324 in²) = 18 in Volume sphere = 4/3 πr³ = 4/3 π (18 in)³ = 7776π in³