it is simple ! multiply both numbers - answer in 17 * 19 = 323 square feet
323
Approx 19 square metres.
20 x 17 = 340, 340 - 17 = 323 sq ft
19 x 13 = 247 square feet.
19' x 15' = 285 square feet
17 x 17 = 289 square feet.
17 feet x 16 feet = 272 square feet
19' x 9' = 171 square feet
19-ft x 17-ft = 323 square feet = 30 square meters. (rounded; correct within 0.03%)
20 x 19 = 380 square feet.
There are: 12*19 = 228 square feet
12 x 17 feet is about 18.95 square meters.