Friday, April 20, 2007
Geometry (Class 69)
Announcements
Quiz Friday, April 20 focusing on Chapter 10 Lessons 1-5
Overview
In this lesson we begin our study of how to compute the volumes and surface areas of prisms, pyramids, cylinders, cones, and spheres. Students will need to commit to memory the formulas for prisms, pyramids, and cylinders.
In addition, we take Quiz 11
Textbook Sections
§12.2 (Txt. p.728) Surface Area of Prisms and Cylinders
§12.3 (Txt. p.735) Surface Area of Pyramids and Cones
Key Attitudes
Mathematics is about looking for patterns.
Key Ideas
The surface area can be computed by finding the areas of each face of a solid.
The surface area of a cylinder is made up of two circles and a rectangle whose height is the height of the cylinder and whose width is the circumference of the cylinder.
Key Skills
Finding the surface are of a prism by applying formulas for the areas of polygons.
Finding the surface area of a cylinder using the formula S=2πr^2+2πh.
Finding the surface area of a pyramid by applying formulas for the areas of polygons.
Finding the surface area of a cone using the formula S = πr^2+πrL
Finding the surface area of a sphere by applying the formula S = 4πr^2
Vocabulary
Surface areas
Prism
Pyramid
Cone
Cylinder
Handouts
No Handouts Posted
Assignment
Worksheet 12.2 Practice A
Worksheet 12.3 Practice A
Disclaimer- The assignment as stated in class is the official assignment. Every effort is made to keep this posting accurate, but you should refer to what was stated in class as the final word.
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