Find the Area of the Surface Obtained by Rotating the Circle

question 1

Multiple Choice

Find the area of the surface obtained by rotating the circle about the line

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Definitions:

Habenula

A paired structure located in the epithalamus of the brain, involved in regulating responses to pain, stress, sleep, and reward by linking the forebrain to the midbrain and associated with various neurotransmitter systems.

Pineal Body

A small endocrine gland in the brain that produces melatonin, a hormone that regulates sleep-wake cycles.

Epithalamus

A part of the diencephalon in the brain that includes the pineal gland and is involved in the regulation of sleep-wake cycles.

Diencephalon

A division of the brain located between the cerebral hemispheres and brainstem, comprising structures such as the thalamus and hypothalamus, essential for sensory and autonomic functions.