IB MAI HL Geometry & Trigonometry Topic 3.1 Geometry of 3D Shapes (id: d88439bd8

本题目来源于试卷: IB MAI HL Geometry & Trigonometry Topic 3.1 Geometry of 3D Shapes，类别为 IB数学

[填空题]
A right cylinder has height hh mm tskp,s kx .hqb ;)rin3s/ a(,g+lszd 6and dia4 s(u/s en,,r1uagbh)rdi) wpmeter xx mm. The volume of this cylinder r i,hrsu4ud,gn)p1(b )/wsea is equal to $45m{m}^3$.


The total surface area, A, of the cylinder can be expressed as $A=\frac{\pi }{2}{x}^2+\frac{k}{x}$.
1.Find the value of k.k=  
2.Find the value of x that makes the total surface area a minimum.x=  mm

参考答案:
空格1: 180  空格2: 3.86±3% 


本题详细解析:

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