Browsing by NSW K-10 Maths for the AC

applies formulas to find the surface areas of right pyramids, right cones, spheres and related composite solids

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Almost Fun - Lessons
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But WHY is a sphere’s surface area four times its shadow?
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Curved Surface Area of Cones
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Interactivate: Surface Area and Volume
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Interactives Geometry 3D Shapes
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Net of a cone
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Surface area - diagram library
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Use Google Sketchup to visualise 3D shapes
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xkcd: Surface Area - Space without the space
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