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Area and Circumference of a Circle

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Author: Tommy Thao
Description:

Common Core State Standards: CCSS.MATH.CONTENT.7.G.B.4
7th Grade Geometry: Know the formulas for the area and circumference of a circle and use them to solve problems; give an informal derivation of the relationship between the circumference and area of a circle.

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Tutorial

What is a circle?

Source: Math is fun: Retrieved July 23, 2018 from https://www.mathsisfun.com/geometry/circle.html Socratic: Retrieved July 23, 2018 from https://d2gne97vdumgn3.cloudfront.net/api/file/2hnEa7afR0Om0DwL4IJz

Video Using the Circumference and Area Formula for a Circle

Source: YouTube: Retrieved July 23, 2018 from https://youtu.be/jyLRpr2P0MQ

More examples of finding the area and circumference of a circle.

Source: Online Math Learning: Retrieved July 23,2018 from https://www.onlinemathlearning.com/area-of-circle.html