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Activity
Other

Calculating the Surface Area of a Cone

For Students 9th - 10th
This site explains a method for finding the surface area of a cone. It has several plane geometry formulas.
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Graphic
The Math League

The Math League: Surface Area

For Students 9th - 10th Standards
This tutorial explains the concept of surface area, and then goes through multiple shapes offering the specific surface area formula for each one.