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Published byAllison Ryan Modified over 9 years ago

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March 12, 2012 1.Trace the circle in your spiral. What is the distance around it?

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÷ = 3.14159265….. ÷

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Circles are everywhere

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Parts of a circle Center point = the exact center of a circle Diameter = all the way across through the center point, touching opposite edges Radius = half way across, from the center point to any point on the circle’s edge Chord= touches two edges of the circle but does not go through the center point.

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DIAMETER RADIUS

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Perimeter CIRCUMFERENCE = the perimeter or distance around the edge of a circle

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2. Write as a decimal

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1. What is the perimeter and area of this shape? Perimeter = ______________ Area = _____________ March 12, 2012

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2. Solve for the variable : Another way to write:

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