1. Module 4

1.22. Page 5

Mathematics 10-3 Module 4 Lesson 4

Module 4: Area

 

Lesson Summary

 

This photo shows a worker repairing the exterior of a home.

© Vladimirs Koskins/shutterstock

 

The worker in the photograph is making repairs to the exterior of a home. The cost of similar repairs depends on the extent of the area damaged. Area is a factor in the cost of materials, repairs, and renovations. Did you have to modify your Unit 2 Project based on area considerations?

 

In this lesson you explored these questions:

  • How are nets used as a strategy for finding the surface area of 3-D objects?
  • How are formulas for the surface area of 3-D objects developed through examining nets?

You explored the surface area of 3-D objects by analyzing the 2-D nets you can use to create these objects. In particular, a few of the nets you investigated were for cubes, rectangular prisms, and pyramids. From these nets you developed formulas and solved everyday problem situations involving surface area.

 

m10_3_assign.jpg Assignment

 

Retrieve the Lesson 4 Assignment Booklet you saved in your course folder at the start of this lesson. Complete the Assignment Booklet. Resave your Assignment Booklet in your course folder and submit a copy to your teacher for assessment.

 

Unit 2 Project

 

Before you move on to the next lesson, you should return to the Unit 2 Project and check whether surface area was one of the elements you had to modify.