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Different Methods of Drawing a Circle

A circle is m...

Question

A circle is made by bending a long metal rod end to end as shown. Which of the following will be true?

A

Length of the rod = Length of the radius

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B

Length of the rod > Length of the boundary

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C

Length of the rod < Length of the boundary

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D

Length of the rod = Length of the boundary

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Solution

The correct option is D Length of the rod = Length of the boundary
The rod is bent to become a circle. So the rod will become the boundary of the circle.
Therefore, length of the rod = length of the boundary of the circle

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