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# Bricklayer's Formula

### By Sasha Kozlov

Why did I choose this project?

I chose this project because I like measuring things. I also like to work outdoors and this project allows you to do that.

This project is about finding the formula about how much bricks are in the part of the wall. It is also about measuring the different parts of the brick wall .

Project

In the math book there is a formula for finding the amount of bricks in a part of the brick wall. It is N(the amount of bricks in a part of the brick wall) =7 *L(length of the part in a brick wall)*H(height of the part in a brick wall). Also this formula only works for Feet. So I measured a part of the brick wall. The length is 2 feet and the height is 2 feet.

Me measuring the height of the part in a brick wall that 2 feet.
Me measuring the length of the part in a brick wall that is 2 feet

Then what I did is that I counted the bricks and got 20 bricks.

So if we rewrite the formula we get 20=7*2*2 so I’m not sure if that’s true so I check 7*2 is 14 and multiply that by 2 that equals 28 and that’s not equal to 20. The number got bigger so try to change the 7 into a smaller number. First I picked 6. 6*2 is 12 and 12*2 is 24. The number is still too big. So instead of 6 I pick 5. 5*2 is 10 and 10*2 is 20. 20 does equal to 20. I think the formula N=7*L*H is wrong and the formula N=5*L*H is right but to make sure I measure another part of the wall with the different lengths and heights. I measured the length which is 5 feet now and the height which is 5 feet now.

Me measuring the length of part in a brick that is 5 feet.
Me measuring the height of the part in a brick wall that is 5 feet

I counted the bricks and got 125

First I try with the formula N=7*L*H, 7*5 is 35 and that multiplied by 5 is 175. 175 isn't equal to 125 so I try the formula N=5*L*H, 5*5 is 25 and 25 multiplied by 5 is 125. 125 is equal to 125 so the formula N=5*L*H is the formula for finding the amount of bricks that are in a part of a brick wall.