8 inches = 8/12 ft = 2/3 or .66 ft
20ft X 21ft = 420ft2 X .66ft or 2/3ft = 280ft3 (feet cubed )
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There is 121 square feet in a 11'x11' room.
To find the area of a room that is 35 feet by 35 feet, you would multiply the length by the width. So, 35 feet x 35 feet = 1225 square feet. Therefore, a room that is 35 feet by 35 feet has an area of 1225 square feet.
1 sq. ft. = 144 sq. inches So divide by '144' Hence 7125 sq. ins / 144 sq. ins = 49.479... sq.ft.
99 square feet !
228 square feet