One katha is about 720 square feet.
Square feet means a flat area. Feet means a line measure. One square foot is an area equal to a square that measures one foot on each side. A rectangle measuring 6 inches by 2 feet would also contain...
A foot is a unit of length. A square foot is a unit of area. The two units are therefore incompatible.
Feet are length units, square feet are area units. It is not possible to convert between the two.
erm i dno but im guessin 9 :D from bob, boblin, bobba