natilieyoungpelgob natilieyoungpelgob

15-10-2018
Mathematics

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If 400 bricks measuring 81" by 31" are required to build a wall 42 ft. high, how long is the wall?

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austint1414 austint1414

15-10-2018

Area of one brick = 6.75x2.58=17.44[tex]ft^{2}[/tex]

Area of 400 bricks = 400x17.44=6975[tex]ft^{2}[/tex]

Total brick area divided by 42' height of wall = 6975÷42=166.07 ft

The correct answer is 166 ft

Hope this helps!!!

<3 -austint1414

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