Convert 5cm to Millimeters: Basic Metric Unit Conversion

To solve this problem, we'll follow these steps:

• Step 1: Identify the given measurement of $5 \text{ cm}$.
• Step 2: Use the conversion factor from centimeters to millimeters, which is $1 \text{ cm} = 10 \text{ mm}$.
• Step 3: Multiply the number of centimeters by the conversion factor: $5 \text{ cm} \times 10 \text{ mm/cm} = 50 \text{ mm}$.

Now, let's work through each step:
Step 1: Our initial measurement is $5 \text{ cm}$.
Step 2: We know that $1 \text{ cm} = 10 \text{ mm}$.
Step 3: By multiplying $5 \text{ cm}$ by $10 \text{ mm/cm}$, we obtain $50 \text{ mm}$.

Therefore, the solution to the problem is $50 \text{ mm}$, which matches choice 4.