Question

You plan to construct a brick wall measuring 15 ft. in length, 6 ft. high, and 1 ft. in width. If a brick measures 6 in. x 4 in. x 2 in., how many bricks will you need? (Remember to round up.)

Answer 1

You'll align the long side of the bricks along with the long side of the wall, and the shortest side along with the short side of the wall. I'll demonstrate with a sketch (not to scale).

Answer 2

for the length of the wall (15 feet) you'll divide by the length of the brick (6 inches) to see how many bricks can fit along the length. be careful about units - because our wall length is in feet, you'll first convert 15 feet to inches by multiplying 15 feet * 12 inches/foot. then, you can divide.

repeat this step for the height and width of the wall and bricks. finally, once you have the number of bricks you'll need in each direction, you can simply multiply (# of bricks long)(# of bricks high)(# of bricks wide) to get the total # of bricks.