2026年6月国际C卷练习 · 第 22 题

2026年6月国际C卷练习 · 原库模块 2 · Q22 参考答案

For the right circular cone shown, \( OP \) is a radius of the base and V is the vertex. The cone's lateral surface area, in square meters, is rLπ, where r is the length, in meters, of \( OP \) and L is the length, in meters, of \( VP \). The cone has a base area of 81π square meters and a lateral surface area of 128π square meters. What is the height of the cone, to the nearest meter?