直圆锥计算器 - 面积、体积和表面
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母线长 = hypot(r,height)；底面积 = pi*r**2；总表面积 = pi*r*(r+slant)；体积 = base*height/3
- r
- Radius · m
- height
- Height · m
- pi
- 3.141592653589793