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3d geo

Published on Nov 18, 2015

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PRESENTATION OUTLINE

3 D Geometry

Photo by DaveFayram

WHERE IS THIS

  • Can you guess?
Photo by ReneKr

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Photo by v.williams46

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Photo by Doha Sam

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Photo by Nanagyei

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Photo by m01229

DO YOU REMEMBER?

Area of a circle is Pi r2
Photo by Entons

LET'S MAKE THIS

Photo by fo.ol

Please calculate the

  • Surface area?
  • Volume?
Photo by Dave Dugdale

How big is the world?

r =6,371 km

Can we prove

  • that SA of an orange is 4Pi r2?
  • How?

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