Area to be covered = 5 ft*6 ft = 60 in*72 in = 4320 sq in.
Area of each brick = 4 in* 10 in = 40 sq in.
So, in theory, you will need 4320/40 = 108 bricks.
450 bricks.
Depends on how big the bricks are.
The answer to this all depends on the size of the bricks.
8
It depends on the size of the bricks and their orientation when they are laid.
1980
144
60
Math says 4 1/2 4"x8" bricks are needed to cover 1 sq. ft. So 9 bricks will cover 2 sq ft. That needs to happen 500 times so you need 9x500 or 4500 bricks sized 4"x8" to cover 1000 sq ft.
It is ot possible to answer this question because bricks are 3-dimensional objects that cover 2-dimensional areas. 15 feet is a length, not an area. Furthermore, there is no information on the size of the bricks.
You need the dimensions of the bricks.
4"X8"= 32 sq in . . . 144 sq in per sq ft . . . 4.5 bricks per sq ft . . . 450 bricks cover 100 sq ft plus joint width and height