What is the longest length 1 yard 1 km 1 m or 1 inch

Answer 1

To compare the lengths you've provided:

• 1 yard = 3 feet = 36 inches
• 1 kilometer = 1,000 meters = 1,000,000 millimeters
• 1 meter = 100 centimeters = 1,000 millimeters
• 1 inch = 2.54 centimeters

Now, comparing the lengths:

• 1 yard is approximately 0.914 meters.
• 1 kilometer is 1,000 meters.
• 1 meter is obviously 1 meter.
• 1 inch is approximately 0.0254 meters.

From this comparison, the longest length is 1 kilometer (1 km).