Find the area of the surface S where S is the part of the sphere 
that lies to the right of the xz-plane and inside the cylinder 
Definitions:
Postformal Stage
A proposed stage of cognitive development following Piaget's formal operational stage, characterized by the ability to handle ambiguity, contradiction, and complexity in thinking.
Cognitive Development
This refers to the progression of thinking, problem solving, and information processing abilities from childhood through adolescence to adulthood.
Piaget's Work
The theoretical framework developed by Jean Piaget, describing the stages of cognitive development from infancy through adulthood.
Abstractism
An art movement that uses shapes, colors, forms, and gestural marks to achieve its effect rather than depicting objects from the real world directly.
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