Final answer:
The diameter of a human hair is approximately 1.77x10^8 picometers.
Step-by-step explanation:
The diameter of a human hair is 1.77x10-4 meters. To convert this diameter to picometers, we know that 1 meter is equal to 1x1012 picometers. So, we can multiply the diameter in meters by 1x1012 to get the diameter in picometers.
1.77x10-4 meters × 1x1012 picometers/meter = 1.77x108 picometers
Therefore, the diameter of a human hair is approximately 1.77x108 picometers.