While measuring radius of a circle, we look at the value of the mark where the circle intersects the _________ .

thread

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compass

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scale

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protractor

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Solution

The correct option is C scale
Scale is used to measure the radius of a circle.
For measuring radius of a circle:

Align the “0” marking of the scale with the centre of the circle.

Find the value of the mark where the circle intersects the scale.

The value of the mark is the required radius of the circle.

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