请输入圆锥的底半径和高。
圆锥的体积为:
圆锥的表面积为:
3 5
圆锥体积V=47.10
圆锥表面积L=83.19
开平方使用sqrt()
L*L==r*r+h*h
例如L=sqrt(r*r+h*h)
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