1. The length of rope used is equal to the length of the chord of the circle.
  2. The length of rope used is equal to the length of the diameter of the circle.
  3. The length of rope used is equal to the length of the radius of the circle.
  4. The length of rope used is equal to the length of the circumference of the circle.
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1 Answers

Option 3 : The length of rope used is equal to the length of the radius of the circle.

To make a circle with a rope having two nails at its end Renuka needs to fix one of the ends on the ground.

And rotate the another end to make a circle.

In this way the length of the rope is equal to the radius of the circle.  

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