## 2.1 Units of Surface Area and Volume

Conversions involving square and cubic units are no longer in the curriculum.

## 2.2 Surface Area

In grade 8, we were introduced to the idea of surface area of 3 dimensional objects.  Today, you will be extending those ideas to find the surface areas of other 3d shapes, including spheres, cones and pyramids.

Things you should be able to do after today:

• Find the surfacea area of cone, given two of the following measurements: height, radius, slant height
• Find the surface area of a sphere, given the radius or diameter
• Find the surface area of a rectangular pyramid or a square based pyramid
• Given the surface area, algebriacally solve for a missing measurement

Resources:

• Notes

Assignment:

• p74 #1, 3, 5-8, 11, 12, 14-17 *19

## 2.3 Volume

Last class we found the surface area of spheres, and cones and pyramids.  Today you will explore the forumulas for finding the volumes of these same shapes, or composite shapes.

Things you should be able to do after today:

• Calculate the volume of a sphere, given the radius or diameter
• Calculate the volume of a cone, given the radius and height
• Calculate the volume of a pyramid, given the length, width and height
• Relate the volumes of a cone to a cylinder, and a pyramid to a rectangular prism fo the same dimensions
• Determine the volumes of composite shapes
• Solve for a missing measurement if given the volume

Resources:

• Notes

Assignment:

p86 #1-3, 5, 6, 8, 9, 11, 12, 14-16 *18