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计算圆锥体积、表面积、侧面积及底面积。
Formulas
Slant Height: l = √(r² + h²)
Base Area: A_base = π·r²
Lateral Surface Area: A_lat = π·r·l
Total Surface Area: A = π·r·(r + l)
Volume: V = (1/3)·π·r²·h
Please enter positive real numbers. Both radius (r) and height (h) must be greater than 0.

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面对圆锥几何体,手动套用公式计算体积或表面积繁琐且容易出错。圆锥计算器基于标准几何公式,只需输入底面半径和高,即可一键输出圆锥的体积、侧面积、表面积、底面积以及母线长度,帮助用户快速完成学习或工程中的圆锥参数换算。
输入数值必须为正实数,不支持负数或零;结果保留两位小数,实际精度受浮点运算影响;所有计算均在浏览器本地完成,不会上传数据,请放心使用。如遇到结果显示异常,请刷新页面或检查输入格式是否包含非法字符。
在工程设计或教学场景中,圆锥参数常需快速验算。建议固定一种单位体系,批量计算时可将结果导出或记录。典型应用:已知圆锥形沙堆底部半径3米、高2米,可快速求出沙堆体积约18.85立方米;已知圆锥漏斗半径10厘米、高15厘米,可得侧面积约559.76平方厘米用于材料裁剪。掌握母线、侧面积与展开扇形的对应关系,有助于理解圆锥展开图制作。