The diagram shows isosceles triangle $$\(A B C\)$$ Diagram NOT accurately drawn $$\(A B=A C=17.5 \mathrm{~cm}\)$$ $$\(B C=28 \mathrm{~cm}\)$$ Calculate the area of triangle $$\(A B C\)$$ $$\(\mathrm{cm}^{2}\)$$

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