√(4-y^2)
Definition
This expression represents the equation of the curve being revolved around the y-axis.
Analogy
Imagine you are drawing on a canvas and you want to create a circular shape using only straight lines. You can achieve this by connecting multiple points along the edge of the circle with short line segments.
Related terms
Equation: A mathematical statement in which two expressions are equal.
Curve: A continuous smooth line that deviates from being straight.
Y-Axis: The vertical number line on a coordinate plane.
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