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Santiago was preparing to purchase a new ladder to reach the top of a 30-foot wall. He was looking at a ladder when he noticed this warning label on the ladder:

CAUTION: Never exceed an angle of elevation of ${70}^{o}$.

If Santiago purchased the ladder and followed the safety warning, how long must the ladder be to reach to the top of the wall (round up to the next larger foot)?


$ x=32\; \text{feet}$


$ x=39\; \text{feet}$


$ x=48\; \text{feet}$


$ x=29\; \text{feet}$

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