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प्रश्न
Now you trace a circle on a paper using a bangle. Cut it. Then find its centre like Sameena did.
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उत्तर
After tracing the circle using a bangle on notebook, cut the circle from its outline. Fold the circle into half.
Fold it again in half. Open the folded circle. The crossing point of the two creased line is its centre.
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संबंधित प्रश्न
Is any of these a good drawing of a circle?
Do the activity in small groups. Each group should take a rope of a different length. See the circles made by different groups.
Does a longer rope make a bigger circle? Why is it so?
What was the radius of the smallest circle?
Now see what your friends have drawn. Discuss the length of the radius they measured. Is it the same as yours?
Are all wheels of a tractor or road roller of the same radius?
Lali and Kali are tied to a pole with ropes. Kali has a longer rope. Who can look for more grass to eat?
Have you seen a compass before? How will you use this to make a circle?
- Open your compass.
- Press the tip of the compass on the paper. Hold the compass from the top.
- Without moving the tip, try to move the pencil around.
- Do you get a circle?
Is this circle better than the one you made earlier without a compass?
Draw the radius of this circle and measure it.
To make the top spin well, where will you make the hole?
