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The height of a cylinder is equal to its diameter.  What fraction of the surface area of the cylinder is the total area of the two bases?

 May 22, 2020
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Surface  area  of  cylinder   =   2pi * r  * (2r)   =  4 pi r^2

 

Area  of  the two bases  =   2 pi *r^2

 

Area of two bases  /   Surface area of cylinder   =   [ 2 pi  r^2  ]  / [ 4 pi r^2]   =    1  / 2

 

cool cool cool

 May 22, 2020

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