Bricklayers use the formula N = 7LH to estimate the number of bricks N needed to build a wall of height H and length L. What is the height of a wall that is 30 feet long and that requires 2,310 bricks to build?

Question

Bricklayers use the formula N = 7LH to estimate the number of bricks N needed to build a wall of height H and length L.  What is the height of a wall that is 30 feet long and that requires 2,310 bricks to build?

texaschic101 · Answer

N = 7LH
N = 2310
L = 30
now sub
2310 = 7(30) * H
2310 = 210H
2310/210 = H
11 = H

check..
N = 7LH
2310 = 7 * 30 * 11
2310 = 210 * 11
2310 = 2310 (correct)

Height is 11 ft

any questions ?