2cm 20mm = what is mm
The Correct Answer and Explanation is :
To convert 2 cm and 20 mm into millimeters (mm), we can follow these steps:
- Understand the conversion factors:
- 1 centimeter (cm) is equal to 10 millimeters (mm).
- Convert centimeters to millimeters:
- For 2 cm:
[
2 \text{ cm} \times 10 \text{ mm/cm} = 20 \text{ mm}
]
- Add the millimeters:
- We already have 20 mm from the original measurement.
- Now, combine the converted centimeters with the additional millimeters:
[
20 \text{ mm} + 20 \text{ mm} = 40 \text{ mm}
]
Therefore, 2 cm and 20 mm is equal to 40 mm.
Explanation
Conversions between metric units, such as centimeters to millimeters, are essential in various fields, including science, engineering, and everyday measurements. The metric system is a decimal-based system, meaning it is built around powers of ten, which makes conversions straightforward.
In this instance, knowing that 1 cm equals 10 mm allows for easy calculations. When working with mixed units, such as centimeters and millimeters, it’s vital to convert all measurements to the same unit before performing any operations, like addition or subtraction.
For example, if someone measures the length of an object and records it as 2 cm and 20 mm, it’s often more practical to express the total length in a single unit. This simplifies understanding and ensures accuracy in applications such as manufacturing, construction, and scientific research, where precise measurements are crucial.
Ultimately, mastering these conversions not only aids in communication but also enhances one’s proficiency in various practical tasks, ensuring that calculations are reliable and universally understood. In summary, converting 2 cm and 20 mm results in a total of 40 mm, showcasing the ease and efficiency of metric system conversions.