Rotate curve around x axis [closed]

How can I solve next problem? I have a curve and area which I need to rotate around x axis to make a sphere. Can it be like an animation? So far I made a half of sphere, and a whole sphere, bit I don't know how to animate it?

closed as off-topic by m_goldberg, MikeLimaOscar, José Antonio Díaz Navas, bbgodfrey, Yves KlettJan 24 at 8:14

This question appears to be off-topic. The users who voted to close gave these specific reasons:

• "This question cannot be answered without additional information. Questions on problems in code must describe the specific problem and include valid code to reproduce it. Any data used for programming examples should be embedded in the question or code to generate the (fake) data must be included." – MikeLimaOscar, bbgodfrey
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• Welcome to Mma.SE! Please post code as text instead of a screenshot; it makes it a lot easier us to try it out. – kirma Jan 20 at 16:11
• If you want an animation of this you probably need to be a bit more specific regarding your expected result. – kirma Jan 20 at 16:13
• – Michael E2 Jan 20 at 16:22
• Possible duplicate of RevolutionPlot3D: but NOT revolving about the z axis – Yves Klett Jan 24 at 8:14
• Somehow I found this few days ago, it halped. Tnak you for your concern. Tnx for solutions. :) – Danica Jan 24 at 22:11

RevolutionPlot3D[Sign[x] Sqrt[4 - x^2], {x, -2, 2},

RevolutionPlot3D[Sqrt[4 - x^2], {x, -3, 3},