The surface area of a cell phone screen is 12200 mm2. Use the fact that 10 mm = 1 cm to convert this area to cm2. Round your answer to the nearest whole number.

To convert the surface area of the cell phone screen from square millimeters to square centimeters, we use the conversion factor where \(10 \text{ mm} = 1 \text{ cm}\).

Given:
- The total surface area of the cell phone screen is \(12200 \text{ mm}^2\).

First, we need to convert the area from square millimeters to square centimeters. 

Since \(10 \text{ mm} = 1 \text{ cm}\), we can convert square millimeters to square centimeters by squaring the conversion factor:

\[
1 \text{ cm} = 10 \text{ mm} \implies 1 \text{ cm}^2 = (10 \text{ mm})^2 = 100 \text{ mm}^2
\]

Therefore,

\[
1 \text{ mm}^2 = \frac{1}{100} \text{ cm}^2 = 0.01 \text{ cm}^2
\]

Now, multiply the given area in square millimeters by this conversion factor to get the area in square centimeters:

\[
12200 \text{ mm}^2 \times 0.01 \text{ cm}^2/\text{mm}^2
\]

\[
12200 \times 0.01 = 122
\]

Therefore, the total surface area of the cell phone screen is \(122 \text{ cm}^2\).

Would you like further details or have any questions?

Here are 5 questions you might want to ask:
1. How do I convert from square meters to square centimeters?
2. Can you explain how to find the surface area of a rectangular prism?
3. What is the difference between area and volume?
4. How do I convert from cubic centimeters to liters?
5. What is the formula for the volume of a cone?

**Tip:** When converting units of area or volume, remember that the conversion factor must be squared for area and cubed for volume.

Learn how to convert the surface area of a cell phone screen from square millimeters to square centimeters using a simple unit conversion. Detailed step-by-step solution provided. Suitable for students in Grades 6-8.

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