Learning Resources

Home »  » Courses » Mathematics » Mathematics 3204 (delisted) » Unit 02 » Set 01 ILO 03 » Go to Work

Lesson

You may work with a partner or work on your own to complete this project. You will require the following materials and formulas to complete the project:

  • a circle of radius 10.0 cm cut from paper or construction paper.
  • a ruler, protractor and compasses.
  • The following formulas:
    circumference of a circle:
    area of a circle:
    volume of a cone: where A represents the area of
    the base 

The interactive below shows the removal of one 10% sector (i.e. a sector with angle of 36°). It also shows the calculations required to answer the questions in the project.

As you complete questions (a) to (c) in the Chapter Project, record you results in a table like the one below.

Number

of sectors

removed

Radius

of base

of cone (cm)

Circumference

of base of

cone (cm)

Height of

cone (cm)

Area of

base of

cone (cm2)

 Volume of

cone (cm3)

1 (10%)

          

2 (20%)

          

3 (30%)

          

4 (40%)

          

5 (50%)

          

6 (60%)

          

Activity

Complete parts (a) - (g) of the Chapter Project on pages 83 & 84 in your text.

Test Yourself

There are no test items for this lesson. However, be prepared to discuss the  project with your teacher and/or your fellow students.