$$\(19 k=\frac{t}{a-h}\)$$ $$\(t=14\)$$ correct to 2 significant figures $$\(a=7.8\)$$ correct to 2 significant figures $$\(h=3.4\)$$ correct to 2 significant figures Work out the lower bound for the value of $$\(k\)$$. Show your working clearly.

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