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Question
A rectangular piece of paper is 30 cm long and 20 cm wide. How many ways can be adopted if one wants to give this rectangular piece of paper a cylindrical form?
A rectangular piece of paper is 30 cm long and 20 cm wide. How many ways can be adopted if one wants to give this rectangular piece of paper a cylindrical form?
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Solution
The correct option is D Two
Obviously two ways can be adopted if one wants to give the rectangular piece of paper a cylinder form i.e. 1 when the paper is bent towards its length.In this case the circumference of the base of the cylinder will be equal to the length of the rectangular piece of paper and the height of the cylinder will be equal to the breadth of the rectangular piece of paper.
2 When the paper is bent towards its breadth in this case the circumference of the base of the cylinder will be equal to the breadth of the rectangular piece of paper and the height of the cylinder will be equal to the length of the rectangular piece of paper,
Obviously two ways can be adopted if one wants to give the rectangular piece of paper a cylinder form i.e. 1 when the paper is bent towards its length.
In this case the circumference of the base of the cylinder will be equal to the length of the rectangular piece of paper and the height of the cylinder will be equal to the breadth of the rectangular piece of paper.
2 When the paper is bent towards its breadth in this case the circumference of the base of the cylinder will be equal to the breadth of the rectangular piece of paper and the height of the cylinder will be equal to the length of the rectangular piece of paper,
2 When the paper is bent towards its breadth in this case the circumference of the base of the cylinder will be equal to the breadth of the rectangular piece of paper and the height of the cylinder will be equal to the length of the rectangular piece of paper,
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