Height of a person is `1m` `65cm`. His height in millimeters is_______.

Options

A. `1650mm`
B. `16500mm`
C. `165mm`
D. `16550mm`

Answer

To find the height of a person in millimeters when given in meters and centimeters, we can follow these steps:

1. **Understand the given height**: The height of the person is given as 1 meter and 65 centimeters.

2. **Convert meters to millimeters**:
- We know that 1 meter is equal to 1000 millimeters.
- Therefore, 1 meter = 1000 mm.

3. **Convert centimeters to millimeters**:
- We also know that 1 centimeter is equal to 10 millimeters.
- Thus, to convert 65 centimeters to millimeters, we multiply:
\[ 65 \, \text{cm} = 65 \times 10 \, \text{mm} = 650 \, \text{mm} \]

4. **Add the two measurements together**:
- Now, we can add the millimeter equivalents of both measurements:
\[ \text{Total height in mm} = 1000 \, \text{mm} + 650 \, \text{mm} = 1650 \, \text{mm} \]

5. **Final answer**: The height of the person in millimeters is **1650 mm**.