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The area moment of inertia about a specific axis is defined by integrating the square of the perpendicular distance from that axis over the entire area. For the y-axis, the perpendicular distance from any differential area element to the axis is the horizontal coordinate $x$.

Conditions: The moment is computed over a planar area in the xy-plane.; The axis of interest is either the x-axis or the y-axis.; The distance is measured perpendicularly from the axis to the differential area element.

The area moment of inertia about a specific axis is defined by integrating the square of the perpendicular distance from that axis over the entire area. For the y-axis, the perpendicular distance from any differential area element to the axis is the horizontal coordinate $x$.

Conditions: The moment is computed over a planar area in the xy-plane.; The axis of interest is either the x-axis or the y-axis.; The distance is measured perpendicularly from the axis to the differential area element.

The units of the area moment of inertia are derived directly from its defining integral, $I = \int r^2 dA$. The differential area element $dA$ has units of length squared (e.g., $m^2$).

Conditions: Lengths are measured in meters in the specific example.; The integral represents an area moment of inertia.

The units of the area moment of inertia are derived directly from its defining integral, $I = \int r^2 dA$. The differential area element $dA$ has units of length squared (e.g., $m^2$).

Conditions: Lengths are measured in meters in the specific example.; The integral represents an area moment of inertia.