## Math 7B, Lesson 16, Spring 2022, 6/19/2022

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Final exam– covers chapter 13, all about net, cube, cuboid, prism, their volume, total surface, and unit conversion.

## Math 7B, Lesson 15, Spring 2022, 6/12/2022

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## 13.3 Volumes and surface areas of composite solids

• Conversion between different units
• 1m = 100cm, square meters? cubic meters?
• Composite solids
• A solid can be made of two or more basic solids. We can dissect such a composite solid into some parts to find its volume and total surface area

## Homework:

• handout three pages
• workbook: page 38-39, #16, 17, 18, 19

## Math 7B, Lesson 14, Spring 2022, 6/5/2022

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## 13.2 Volume and Total Surface Area of a Prism

• Prism
• cross-section
• uniform cross-section
• base & height
• lateral faces
• the volume of prism = Base Area X Height
• The total surface area of prism = Perimeter of the base X Height + 2 X Base-Area

Homework:

• Handout: 3 pages
• Workbook: page 35-37: 4, 5, 6; 11, 12, 13