(12-ft x 21-ft) / (9 square feet per square yard) = 28 square yards
16' x 28' = 448 square feet.
16 feet x 28 feet equals 448 square feet.
156 square feet
28 x 46 = 1,288 square feet.
336 square feet (12 x 28 = 336).
The floor area of a building12 feet x 28 feet is 336 square feet.
(12-ft x 21-ft) / (9 square feet per square yard) = 28 square yards
16' x 28' = 448 square feet.
12' x 21' (252 square feet) = 28 sq. yards.
16 feet x 28 feet equals 448 square feet.
12 feet x 12 feet = 144 square feet.
156 square feet
Assuming you meant 28 feet x 28 feet, the answer is 784 sq feet.
If the dimensions are in feet then: 28*36 = 1008 square feet
The answer is 238. All you do to fund the square feet is multiply the to together
12 x 17 = 204 (square feet).