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Definition and properties of the central angle of a circle
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Math Open Reference
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Area of an annulus. Definition and formula
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Math Open Reference
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Worksheet to practice using the formula for the area of a circle.
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Helping with Math
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This website shows how to find the area of a ellipse.
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Math Warehouse
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Worksheet to practice calculating area of rectangles
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Helping with Math
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This site has several examples of finding the probability of areas.
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Online Math Learning
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The example uses coordinates, angles and areas to illustrate geometry concepts.
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Thinkquest
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Perimeter, Area, and Volume Formulas
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Dansmath.com
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finding the area or volume of solids
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math for morons like us
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