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Omni-MATH / The rectangular flag shown is divided into seven stripes of equal height. The…

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problem

The rectangular flag shown is divided into seven stripes of equal height. The height of the flag is hh and the length of the flag is twice its height. The total area of the four shaded regions is $1400 \mathrm{~cm}^{2}$. What is the height of the flag?
Plain-text mathematical notation (without MathML)
The rectangular flag shown is divided into seven stripes of equal height. The height of the flag is h and the length of the flag is twice its height. The total area of the four shaded regions is $1400 \mathrm{~cm}^{2}$. What is the height of the flag?
Original LaTeX notation
The rectangular flag shown is divided into seven stripes of equal height. The height of the flag is $h$ and the length of the flag is twice its height. The total area of the four shaded regions is $1400 \mathrm{~cm}^{2}$. What is the height of the flag?

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