2025年3月国际D卷练习 · 第 18 题

2025年3月国际D卷练习 · 原库模块 1 · Q18 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 22.7 inches. What is the least possible value of x, in inches?