To determine which measurement is not equal to 50 millimeters, we first need to convert different units of measurement to millimeters for accurate comparison. Here are some common conversions:
- Centimeters: 1 centimeter (cm) is equal to 10 millimeters (mm). Therefore, 5 cm is equal to 50 mm.
- Inches: 1 inch is equal to 25.4 millimeters. So, 2 inches will be equal to 50.8 mm, which is NOT equal to 50 mm.
- Feet: 1 foot is equal to 304.8 millimeters. Thus, 0.164 feet would be close to 50 mm, but still not exactly equal.
- Micro-meters: 1 micrometer (µm) is equal to 0.001 millimeters, meaning that 50,000 micrometers would equal 50 mm.
By examining these conversions, it becomes evident that among options like 5 cm, 2 inches, and 0.164 feet, the measurement which stands out is 2 inches, as it equals 50.8 mm, making it NOT equal to 50 millimeters.