Math Problem Statement
둘레의 길이가 2πcm인 원에서 중심각의 크기가 240° 인 부채꼴 모양을 오렸다. 이 때 오려 낸 부채꼴의 넓이를 구하여라.
Solution
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Math Problem Analysis
Mathematical Concepts
Geometry
Circle
Sector Area
Formulas
Circumference of a circle: 2πr
Area of a sector: (θ/360) × πr²
Theorems
-
Suitable Grade Level
Grades 8-9
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