Part B: The point (5.24, y) lies on circle L. Which of the following values represents y?

The point (5.24, y) lies on circle L is 3 units apart from the origin. So, the value of y is 3 which represents the radius of the circle.
We need two tools. first is a ruler, and the second is a compass.
Take some fixed points on a paper. Let it be called O
Take the ruler and draw an 'r' unit-sized line segment OA.
Use the compass, place its pointy tip on the fixed point O and the pen or pencil of the compass on the second endpoint A of the constructed line segment.
Now make a full rotation of the compass so that a ring-like figure is created.
This is the needed circle.
The point (5.24, y) lies on circle L.
The origin is (3,0), which means the point (5.24, y) lies on circle L is 3 units apart from the origin.
S0, the value of radius is 3.
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