2025年3月美国A卷 · 第 21 题

2025年3月美国A卷 · 原库模块 1 · Q21 原库参考解析

According to a US law, ramps for use by the general public must form an angle with level ground such that \( tanθ≤\frac{1}{12} \). If the ramp in the figure conforms to this law and has a height of 29.1 inches. What is the least possible value of x, in inches?