Triangle $$\(P Q R\)$$ is mathematically similar to triangle $$\(X Y Z\)$$. The area of triangle $$\(X Y Z\)$$ is $$\(63.6 \mathrm{~cm}^{2}\)$$. Calculate the area of triangle $$\(P Q R\)$$. ..................................... $$\(\mathrm{cm}^{2}\)$$

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