6. Point $K$ is the midpoint of side of rectangle $A B C D$. The area of the shaded part is $76 \mathrm{~cm}^{2}$. What is the area of the entire rectangle?

![](https://cdn.mathpix.com/cropped/2024_05_21_e53d4ff4f2278a1c0d12g-179.jpg?height=462&width=831&top_left_y=1982&top_left_x=610)

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6. The remaining part is equal to the three shaded ones. In total, we have four equal parts.
1) $76 \times 4=304 \mathrm{~cm}^{2}$ - the area of the entire rectangle.

Answer: the area of the entire rectangle is $304 \mathrm{~cm}^{2}$.