1. **State the problem:** We have a cylindrical can with a diameter of 7.3 cm and a height of 110 mm. We need to answer several questions about perimeter, unit conversion, volume, and surface area.
2. **Explain perimeter:** The perimeter is the total distance around a 2D shape. For a circle, the perimeter is called the circumference and is calculated as $2 \pi r$.
3. **Convert height to cm:** Given height = 110 mm. Since 10 mm = 1 cm, height in cm is:
$$110 \text{ mm} = \frac{110}{10} = 11 \text{ cm}$$
4. **Calculate volume:**
- Radius $r = \frac{7.3}{2} = 3.65$ cm
- Height $h = 11$ cm
- Volume formula: $$V = \pi r^2 h$$
- Substitute values:
$$V = 3.142 \times (3.65)^2 \times 11$$
- Calculate $r^2$:
$$3.65^2 = 13.3225$$
- Volume:
$$V = 3.142 \times 13.3225 \times 11 = 3.142 \times 146.5475 = 460.5 \text{ cm}^3$$
5. **Calculate surface area of label:**
- The label covers the curved surface only (no top and bottom).
- Curved surface area formula: $$A = 2 \pi r h$$
- Substitute values:
$$A = 2 \times 3.142 \times 3.65 \times 11$$
- Calculate intermediate:
$$2 \times 3.142 = 6.284$$
$$6.284 \times 3.65 = 22.93$$
$$22.93 \times 11 = 252.23$$
- Rounded to nearest cm²:
$$252 \text{ cm}^2$$
**Final answers:**
1.1 Perimeter is the total distance around a shape.
1.2 Height = 11 cm
1.3 Volume = 460.5 cm³
1.4 Label surface area = 252 cm²
Cylindrical Can 971B28
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