13 x 18 = 234 square feet.
12 feet x 18 feet = 216 square feet
2.25 square feet.
There are: 18*15.5 = 279 square feet
1,080 square feet (18 x 60 = 1,080).
30 x 18 feet equates to approximately 50.17 square meters.
18' x 30' = 540 square feet.
30 × 60 = 1800 square feet
To calculate square feet you multiply the length times the width. 18 x 30 = 540 square feet.
30 feet x 30 feet = 900 square feet.
10' x 18' = 180 square feet.
13 x 18 = 234 square feet.
12 feet x 18 feet = 216 square feet.
10' x 18' = 180 square feet.
5260 x 5260 x 18 [ square feet ]
12' x 18' = 216 square feet.
570 square feet.