2025年8月美国A卷 · 第 18 题

2025年8月美国A卷 · 原库模块 1 · Q18 原库参考解析

The table shows the volume of two similar solids, right circular cylinder A and right circular cylinder B. The radius of right circular cylinder A is 2 units. The surface area of right circular cylinder A is kπ square units, and the surface area of right circular cylinder B is nπ square units, where k and n are constants. What is the value of n-k? (The surface area of a right circular cylinder with radius r and height h is 2πr²+ 2πrh.)