**Q: **Is area the quantity that expresses the extent of a two-dimensional figure or shape? ¶

**A: **Yes, or planar lamina, in the plane.

**Q: **Is area related to the definition of determinants in linear algebra? ¶

**A: **Yes, and is a basic property of surfaces in differential geometry.

**Q: **Is area its analog on the two-dimensional surface of a three-dimensional object? ¶

**A: **Yes.

**Q: **Is area all rational numbers? ¶

**A: **Yes.

**Q: **Is area the square metre? ¶

**A: **Yes, and which is considered an SI derived unit.

**Q: **Is area the square metre? ¶

**A: **Yes, and which is the area of a square whose sides are one metre long.