🍦 圆锥体积计算器Cone Volume Calculator
由底面半径和高计算圆锥体积、母线长、侧面积和表面积，也可计算圆台（截头圆锥）。Cone volume, slant height, lateral and total surface area from radius and height; also handles a frustum.
使用说明与常见问题How-to & FAQ
「圆锥体积计算器」是什么？What is the Cone Volume Calculator tool?
由底面半径和高计算圆锥体积、母线长、侧面积和表面积，也可计算圆台（截头圆锥）。Cone volume, slant height, lateral and total surface area from radius and height; also handles a frustum.
如何使用「圆锥体积计算器」？How do I use the Cone Volume Calculator tool?
在「圆锥体积计算器」中，填写「底面半径 R」、「高 h」、「顶面半径 r(圆台，可选)」等参数，结果会随输入实时计算并显示在下方。In the Cone Volume Calculator: Fill in "Base radius R", "Height h", "Top radius r (frustum, optional)"; results are recalculated instantly as you type.
计算精度如何？How precise are the results?
「圆锥体积计算器」使用 JavaScript 双精度浮点数（约 15–16 位有效数字）；极大或极小的数值可能存在精度误差。The Cone Volume Calculator uses double-precision floating point (about 15–16 significant digits); very large or very small values may lose precision.
「圆锥体积计算器」免费吗？需要注册吗？Is the Cone Volume Calculator free? Do I need an account?
「圆锥体积计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Cone Volume Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.