Let's see here.... If you layed them without mortar between them that would be 18 bricks for every 4 square feet so your answer is 648 bricks.
104 sq feet = 104*12*12 square inches which will require 104*12*12/(4*8) = 468 bricks.
you would need 12...
6 inches is half a foot so it takes four 6 by 6 inch bricks to make one square foot. 348 x 4 = 1392. So you'll need 1392 bricks.
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...
12x13/12=13
104 sq feet = 104*12*12 square inches which will require 104*12*12/(4*8) = 468 bricks.
About 240 three inch by eight inch bricks would be need for create a ten foot by four foot patio. It would be preferable to purchase another 24 or 10 percent more for wastage.
you would need 12...
6 inches is half a foot so it takes four 6 by 6 inch bricks to make one square foot. 348 x 4 = 1392. So you'll need 1392 bricks.
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...
12x13/12=13
144
225 bricks. 16in * 16in = 256 sq. in. 20ft = 240in. 240in * 240 in = 57,600 sq. in. 57,600 sq. in. / 256 sq. in. = 225. 225 bricks is your answer.
Aprox 26
15
Assuming you lay them all the same way.... 4x8 = 32, area of a brick. 6x24 = 144, area of the walkway. Now, the walkway is in square feet, so we need to multiply by 144 to change it to square inches. 144 x 144 = 20,736. Divide this by the area of the brick. 20,736 / 32 = 648 So you need 648 bricks to cover the entire walkway.
Each brick has an area of 1ft x 1ft ie 1 sq foot. So you would need 308 bricks.