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Created March 8, 2019 18:35
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api-control-effort-ex-2.md 
Correct Answer: 1. x = h3 * round((h1 - h2) / (2 * h3))

Puzzle 2

Now we'd like to tie the upper side of the smaller rectangle to a grid. The rest is the same. We are still centering the smaller box within a larger one, only this time rounding the value of x to the closest grid row.

The height of a grid row is h3.

Puzzle: center a rectangle within a grid

Here are the options:

1. x = h3 * round((h1 - h2) / (2 * h3))
2. x = h3 * (h1 - h2) / 2
3. x = h3 * floor((h1 + h2) / 2)
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