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Question

When we fold a rectangle to form a cylinder what will the radius and height of cylinder

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Solution

Foldung can be done in two ways.
1.Folding length wise.
thus circumference of cirlce become the length and height become breadth
I.e 2πr=l and h=b
r=(l÷2π)
2.Folding breadthwise
thus circumference of circle become breadth and height become length
i.e 2πr=b and h=l
r=b÷2π

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