The volume of a cylinder with radius r and height h is given by . If the height of a cylindrical can is held constant, the volume is proportional to the radius squared. What is the constant of proportionality? 
Definitions:
Biological Basis
Refers to the underlying genetic, neurophysiological, and biochemical factors that contribute to human behavior and mental states.
Mentally Healthy Perspective
A viewpoint characterized by balanced emotional, psychological, and social well-being, where an individual can cope with normal stresses and work productively.
Conflicted Relationships
Interpersonal connections that are marked by ongoing disagreement or discord.
Psychiatric Disorder
A mental disorder that significantly affects one's thinking, emotions, and behaviors, impairing daily functioning.
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