1. Material Taken From: Mathematics for the international student Mathematical Studies SL Mal Coad, Glen Whiffen, John Owen, Robert Haese, Sandra Haese and Mark Bruce Haese and Haese Publications, 2004

2. Objectives To convert one-dimensional units To find the perimeter of a closed figure To convert two-dimensional units To find the area of a closed figure

3. Systems of Measuring Metric System – meter – gram – liter – Joule – Newton – Watt Imperial System – inch – foot – yard – mile – acre – ounce pint quart gallon pound teaspoon tablespoon cup Chapter 11 – Section A - Conversion of Units

4. Converting Units kinghenrydied basically drinkingchocolatemilk kilohectodekadecicentimilli

5. 1) Convert: a)16.73 m to cm b)48380 cm to km

6. 2) Convert a)2.3 kg to grams a)8 470 000 g to tonnes

7. The perimeter of a figure is the measure of the distance around its boundary. The perimeter of a circle is called its circumference. The formula for circumference is: C = πd or C = 2πr Page 359 has formulae for different perimeters Chapter 11 – Section B - Perimeter

8. 1) Find the perimeter of: a) b)

9. 2) Find, to 3 sig figs, the circumference of a circle of: a) diameter 13.8 meters b) radius 3.7 meters

10. 3) Find, to 3 sig figs, the perimeter of:

11. 4) Find the radius of a circle with circumference 11.7 meters

12. Area units = 10 mm × 10 mm = 1cm × 1cm = 100 mm 2 1cm 2

13. Units of Area kilo- hecta- d-metersdcenti-milli- 1 cm 2 100 mm 2 1 m 2 10 000 cm 2 1 ha10 000 m 2 1 km 2 100 ha1 000 000 m 2 To convert square units, move the decimal twice as far.

14. Square meters vs. Meters Squared an area 2 meters wide by 5 meters long would be 10 square meters, while 10 meters squared means an area of 10 meters by 10 meters. – So 10 meters squared equals 100 square meters. 10 m 2 (10 m) 2

15. Convert: 1) 650000 m 2 to ha2) 2.5 m 2 to mm 2

16. Homework 11A.1, pg 357 – #1acegi, 2ab, 4 11A.2, pg 358 – #1ace, 2ace, 3 11B.1, pg 360 – #1bc, 2bc, 3b, 6, 7, 11 11B.2, pg 362 – #1ad, 2ab, 6 11C.1, pg 364 – #1acegi