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Objectives

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. Objectives. To find the area of a closed figure To find the surface area of a 3D.

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Objectives

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  1. Material Taken From:Mathematicsfor the international student Mathematical Studies SLMal Coad, Glen Whiffen, John Owen, Robert Haese, Sandra Haese and Mark BruceHaese and Haese Publications, 2004

  2. Objectives • To find the area of a closed figure • To find the surface area of a 3D

  3. Chapter 11 – Section C – Area Find the area of: - Area formulae found on page 365 - 3) 4)

  4. Find the area of: 5) 6)

  5. Find the area of: 7) 8)

  6. Find the area of: 9) 10)

  7. 11) A 15m by 8m rectangular garden consists of a lawn with an inner rectangle (7m × 4m) of flowers. Find the area of the lawn.

  8. Chapter 11 – Section D – Word Problems 1) A triangular advertising sign has base 1.6 m and area 2 m2. Find its height.

  9. 2) A rectangular lawn is 12 m by 8 m and a 3.2 m square garden bed is dug out of the lawn. The lawn is then reseeded with boxes of seed, where each box costs $8.50 and covers 18 m2. Find: the area of the lawn the number of boxes of seed required the total cost of the seed.

  10. Chapter 11 – Section E – Surface Area Solids with Plane Faces Surface area of a solid with plane faces is the sum of the areas of the faces.

  11. 1) Find the surface area of the rectangular prism:

  12. Objects with curved surfaces

  13. 3) Find, the surface area of:

  14. 4) Find the outer surface area of:

  15. 5) The length of a hollow pipe is three times its radius. If its surface area is 301.6 m2, find its radius.

  16. Homework • 11C.2, pg 366 • #1c, 2a, 4b, 6c • 11C.3 pg 368 • #1b • 11C.4, pg 369 • #1bc, 3ac • 11D, pg 370 • #2b, 5, 7 • 11E. 1, pg 375 • #1b, 2, 4 • 11E.2, pg 376 • #1cdf, 6

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