81
Gee, a square foot is 12x12, difficult problem.
Technically, 2.6388888888888 etc. but 3. I'm assuming the brick is 12x12 feet here as that is the only unit you have mentioned...
72
A 12 x 12 inch brick is 1 square foot. A 20 x 20 (foot) patio is 400 square feet, so you would need 400 bricks.. this assumes you are butting the bricks fairly tight, not leaving large seperations between them, etc...
81
Gee, a square foot is 12x12, difficult problem.
72
Technically, 2.6388888888888 etc. but 3. I'm assuming the brick is 12x12 feet here as that is the only unit you have mentioned...
256
72
576 should do it.
A 12 x 12 inch brick is 1 square foot. A 20 x 20 (foot) patio is 400 square feet, so you would need 400 bricks.. this assumes you are butting the bricks fairly tight, not leaving large seperations between them, etc...
64
196
144 Assuming paver is 12x12 INCHES and patio is 12x12 FEET One paver in corner to start needs 12 of them for one row 12 feet along; then same upwards. So 12 times 12 pavers = 144 total.
3