How many square feet in a 30 foot wall?

A square foot is a measure of area - in 2-dimensional space. You have provided only one measure - a length (or height). That is not enough.

A square foot is a measure of area - in 2-dimensional space. You have provided only one measure - a length (or height). That is not enough.

A square foot is a measure of area - in 2-dimensional space. You have provided only one measure - a length (or height). That is not enough.

A square foot is a measure of area - in 2-dimensional space. You have provided only one measure - a length (or height). That is not enough.