**Q: **Is length the most extended dimension of an object? ¶

**A: **Yes.

**Q: **Is length the metre and is now defined in terms of the speed of light? ¶

**A: **Yes.

**Q: **Is length any quantity with dimension distance? ¶

**A: **Yes.

**Q: **Is length the inch? ¶

**A: **Yes, and the foot, the yard, and the mile.

**Q: **Is length a measure of one dimension, whereas area is a measure of two dimensions and volume is a measure of three dimensions? ¶

**A: **Yes, In most systems of measurement, the unit of length is a base unit, from which other units are defined.