72.
8 feet x 9 feet = 72 square feet.
8' x 9' = 72 square feet.
72 square feet
72 square feet (8 x 9 = 72).
9 x 9 = 81 square feet.
10.8 x 8 = 86.4 square feet.
8 inch x 16 inch concrete block is actually 2/3 foot x 4/3 foot block Area of one block is 2/3 x 4/3 = 8/9 square feet Number of blocks in 310 square feet = (310)/(8/9) = (310) x (9/8) = 155 x 9/4 which is 1395/4 = 348.75 blocks
8 feet X 8 feet = 64 square feet
Floor and ceiling = (9 x 8) = 72 square feet each Two walls = (9 x 7) = 63 square feet each Other two walls = (8 x 7) = 56 square feet each Total area on all six surfaces inside the room = 382 square feet
8 feet square is the same as 8 square feet. NOT!8 foot square is 8' x 8' or 64 square feet.
Multiply the length x width. 8 ft x 9 ft = 72 ft2
(6 feet 6 inches) x (9 feet 8 inches) equals 62.83 square feet.