How Many 4-inch By 8-inch Bricks Are Needed To Build A Walk 6 Feet Wide And 24 Feet Long?

The area of the bricks is 32 sq in
convert the area of the walk from feet to inches.

So 6 ft = 72 inches by
24 feet = 288 inches

the area of walk = 72in x 288 in = 20736 in/sq

20736/32 = 648 bricks

The area of brick becomes 32 square inches and the area of walk becomes 144 square inches. So the bricks required are:
144/32 = 4.5
5 bricks approx.

For ease of calculating, I'll assume the following:
1)  There is no space between the bricks.
2)  The 4 inch measure will be aligned with the 6 ft wide
3)  The 8 inch measure will be aligned with the 24 ft length.

Step 1.  Find how many 4 inch bricks it takes to make 6 ft.

The width is (6 ft x 12 in/ft).  If you divide by the width of the brick, or 4 in, you'll find out how may bricks wide the wall is.  So,  (6 x 12)/4 = 6 x 3 = 18 bricks.

Step 2.  Find how many 8 inch bricks it takes to make 24 ft.

The length is (24 ft x 12 in/ft).  If you divide by the length of the brick, or 8 in, you'll find out how
may bricks long the wall is.  So,  (24 x 12)/8  (factor to make the problem simpler = (2 x 2 x 2 x 3 x 3 x 2 x 2)/(2 x 2 x 2)  Now cancel out three of the 2's from the numerator and denominator = (3 x 3 x 2 x 2) = 36 bricks.

So the wall is 18 bricks x 36 bricks = 18 x 36 = 648 bricks.

Each brick is (1/3 ft)*(2/3 ft) = 2/9 ft². The walk is (6 ft)*(24 ft) = 144 ft².

144 ft² = (144 ft²)(1 brick/(2/9 ft²) = 144(9/2) bricks = 72*9 bricks = 648 bricks.

Both the 6' and the 24' dimensions are evenly divisible by (2/3)', so the orientation of the bricks doesn't matter, and there are no cuts or leftovers. Of course, this calculation does not allow for anything to be put between the bricks, nor does it allow for rejects or breakage.

6 feet wide is 72 inches - divided by 4 inches = 18 bricks across
6 feet wide is 72 inches - divided by 8 inches = 9 bricks across

24 feet long is 288 inches - divided by 4 inches = 72 bricks long
24 feet long is 288 inches - divided by 8 inches = 36 bricks long

You need about 650 bricks this will also allow you room for a few cutting  mistakes (if you need to cut any)

The width of the walk is 6 ft = (6 ft)(3 brick/ft) = 18 brick.
The length of the walk is 14 ft = (24 ft)(1 brick/(2/3 ft)) = 24*3/2 brick = 36 brick.

The total number of brick needed is 18*36 brick = 648 brick.

54 bricks are needed.

4 x 8 = 32 sq. Inches

6 x 24 = 144 sq. Feet x 12 inches = 1728 sq. Inches

1728 / 32 = 54 bricks

Each brick is 12 inches long 4 inches wide and 2 inches tall. The wall will be 6 feet long 4 inches wide and 10 inches long. How many bricks will Pam need to build the wall?

The same number as the last four times we built this walk, here, here, here, and here. 648