if cylinder by rolling it along the length ,then what is the height ?and circumference ?

Dear Student,



When a rectangular sheet of paper is rolled along its length, then a cylinder is formed.Now, height of the cylinder = breadth of the rectangleCircumference of base of cylinder = length of the rectangle.

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plz expert answer fast very fast 
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In textbook
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you did not give any numericals
 
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sar = comfortence
 
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ii
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Length will become the cylinder's height and its breadth will become its base's circumference. If you still didn't understand then take a rectangular sheet and mark length and breadth on it and then fold it. You will then notice the height and its circumference.    
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