This is a visual demonstration of the sector-proof of the formula for the area of circle.
Common Core: CCSS-G-GMD-1: Give an informal argument for the formulas for the circumference of a circle, area of a circle, volume of a cylinder, pyramid, and cone. Use dissection arguments, Cavalieri’s principle, and informal limit arguments.
Grade: 9-12
Category: Geometry
Domain: G-GMD Geometric Measurement and Dimension
Cluster: Explain volume formulas and use them to solve problems.
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