224.4 square feet. (11 x 20.4 = 224.4)
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Multiply by 9 = 204 x 9 sq feet =1836 sq feet
12 feet x 17 feet = 204 square feet
204 square feet. Multiply length by width - the result is the area in square feet.
11 x 10 feet = 110 square feet
(20 x 11)/9 sqyds... 20 feet x 11 feet = 220 square feet = 220/9 square yards = 24.444 square yards