BeiMattanyecagrose BeiMattanyecagrose

16-12-2016
Mathematics

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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?

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nobillionaireNobley nobillionaireNobley

21-12-2016

N = 7LH; where N = 2,310, L = 30
2310 = 7(30)H = 210H
H = 2310/210 = 11

The height of the wall is 11 feet.

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