How many 16x16 bricks will you need for a patio that is12 ft x 12ft?

Answer 1

81 bricks.

12 feet times 12 inches per foot = 144 inches.
144 inches divided by 16 inches per brick = 9 bricks in length/width.
9 bricks (length) times 9 bricks (width) = 81 bricks.