Without knowing the height of the room then only the floor (or ceiling) area (A) can be calculated.
A = Length x Width
A = 14 x 10 = 140 square feet.
182 square feet.
200 square feet.
201.6 square feet.
270 Square Feet.
144 square feet.
126 square feet
31.4167 square feet.
56 SQUARE FEET
200 square feet
A room that is 12 feet by 13 feet is 156 square feet in area
About 288.17 square feet.
96 square feet.