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#include<stdio.h>
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#define pi 3.14
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int main()
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{ float r,h,c1,sb,vb;
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scanf("%f %f",&r,&h);
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c1=2*pi*r;
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sb=4*pi*r*r;
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vb=pi*r*r*h;
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printf("c1=%.2f\nsb=%.2f\nvb=%.2f",c1,sb,vb);
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return 0;
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}
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