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Circles
by Leow Wei Bo
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Circles

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What?

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symmetric shape

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the diameter & radius are always in a straight line

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shape that has no right-angled,90degree

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always 360degree

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Funky Foxes

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Hazwani

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Wei Bo

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Si En

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Circumference

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twice the radius

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∏ x radius x 2 OR ∏ x diameter

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units

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formula

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Why?

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build buildings in circular shape

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to measure a circular thing

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Diameter

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units

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pass through its centre

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r x 2

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Area

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∏ x r x r

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units

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Radius

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half of diameter

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units

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∏x (d/2)

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Radius

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∏ x (d/2)

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half of diameter

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units

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