PLANNING DOCUMENT
1. Interpret the Task
Short Description of the Task: We are tasked with designing a new 1-litre drink bottle for the Brisbane 2032 Olympics. The bottle design should be unique, minimize material use, and represent Australian heritage, particularly focusing on Aboriginal culture. We will create two different container shapes, calculate their volumes and surface areas, and provide visual and practical proposals for the council's consideration.
List of Information Provided:
- The drink bottle must hold a volume of 1 litre (1000 cm³).
- The shapes must differ from standard cylindrical containers.
- The surface area should be minimized.
- Each design must feature a logo reflecting Australian and Aboriginal heritage.
Additional Information Needed:
- Appropriate dimensions for the selected shapes to achieve the required volume.
- Surface area formulas for different geometric shapes.
- Information on sustainable materials that can be used.
2. Identify the Mathematics
Units of Measurement:
- Volume = cubic centimeters (cm³)
- Surface Area = square centimeters (cm²)
- Dimensions = centimeters (cm)
Useful Formulas:
- Volume of a rectangular prism \( V = L \times W \times H \)
- Volume of a pyramid \( V = \frac{1}{3} \times \text{Base Area} \times \text{Height} \)
- Volume of a cone \( V = \frac{1}{3} \pi r^2 h \)
- Volume of a cylinder \( V = \pi r^2 h \)
- Surface area of a rectangular prism \( SA = 2(LW + LH + WH) \)
- Surface area of a pyramid \( SA = \text{Base} + \frac{1}{2} \times \text{Perimeter of Base} \times \text{Slant Height} \)
- Surface area of a cone \( SA = \pi r(r + L) \)
3. Analyze Information and Data Sources
Information Sources:
- Research on Australian Aboriginal culture and symbols to create a meaningful logo.
- My textbooks and exercise books for mathematical formulas and problem-solving strategies.
- Khan Academy and other online educational platforms for geometric principles.
- Material science resources for sustainable practices.
4. Applying the Mathematics
Calculating Dimensions and Volumes:
DESIGN 1: Rectangular Prism
Dimensions: Let's assume a base dimension of \( L = 10 , cm \) and \( W = 10 , cm \), we can find the height \( H \) using the volume formula.
- Volume = \( L \times W \times H \)
- \( 1000 cm³ = 10 cm \times 10 cm \times H \)
- \( H = \frac{1000 cm³}{100 cm²} = 10 cm \)
Surface Area Calculation:
- Surface Area = \( 2(LW + LH + WH) \)
- Surface Area = \( 2(1010 + 1010 + 10*10) \)
- Surface Area = \( 2(100 + 100 + 100) = 600 cm² \)
Sketch of Design 1:
Provide a labeled sketch of the rectangular prism here. Highlight the dimensions (10 cm x 10 cm x 10 cm).
Scale Drawing of the Net for Design 1: Provide a neat, to-scale drawing with labels for each face (front, back, sides, top, bottom).
DESIGN 2: Pyramid
Dimensions: Assuming a square base with side length \( a \).
- Volume = \( \frac{1}{3} \times a^2 \times H \)
- If we let \( a = 10 , cm \),
- Then \( H = \frac{1000 cm³}{\frac{1}{3} \times 10^2} = \frac{1000 cm³}{\frac{1}{3} \times 100} = 30 , cm \).
Surface Area Calculation:
- Surface Area of a pyramid (1 base + 4 triangular faces).
Base area = \( a^2 = 100 cm² \) and slant height \( \ell \) can be calculated using Pythagorean theorem:
- \( \ell = \sqrt{(\frac{a}{2})^2 + H^2} = \sqrt{(5)^2 + (30)^2} = \sqrt{25 + 900} = 31.62 cm \)
Surface Area = Base + 4 triangular faces
- Surface Area = \( 100 + 4 \times \frac{1}{2} \times a \times \ell \)
- Surface Area = \( 100 + 2 \times 10 \times 31.62 = 100 + 632.4 = 732.4 cm² \)
Sketch of Design 2:
Provide a labeled sketch of the pyramid with dimensions (base 10 cm x 10 cm, height 30 cm).
Scale Drawing of the Net for Design 2: Provide a neat, to-scale drawing of the pyramid net, clearly labeling the slant heights and base dimensions.
5. State and Verify Solution
Preferred Model: I recommend the Rectangular Prism Design due to:
- Lower surface area (600 cm² compared to 732.4 cm² of the pyramid).
- Simpler stacking in retail environments like supermarkets.
- Easier manufacturing and potential for better recyclability with the materials selected.
Logo Design:
- Create a logo featuring elements that symbolize Australia and Aboriginal culture, possibly incorporating the Southern Cross constellation and traditional Aboriginal patterns.
Model:
- Construct an “actual size” model of the rectangular prism design for presentation, showcasing material use and practical storage solutions.
This comprehensive proposal should align well with the Brisbane City Council's goals and vision for the 2032 Olympics water bottle design.