3.14 x the radius (from the center of the room to the edge) = the square footage
If the square footage refers to floor area, yes.
Square footage of a building usually refers to the total square footage of floor area.
270 square feet
width times length
The square footage of a floor that is 11 feet 8 inches by 12 feet 5 inches is 144.86 square feet. Square footage is calculated by multiplying the length of the room by the width.
Length x width = square footage
72 square feet
The square footage of a 25,000 gallon pool depends on the shape of the pool. To determine the square footage multiply the floor width with the floor length. Multiply the length by the height of the walls for each wall. Add all these numbers together to get the square footage.
Measure the area on the plan and multiply by the square of the scale.