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प्रश्न
Guess and Find Out
How long is the thread in a reel?
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उत्तर
The length of the thread depends on the thickness of the reel.
It may be 50 metres, 100 metres, 200 metres or 500 metres or more.
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संबंधित प्रश्न
Try This.
Draw another hair of double the length.

This is the long jump for boys.
Dhanu has the longest jump of 3 metres 40 cm. Gurjeet is second. His jump is 20 cm less than Dhanu's. Gopi comes third. His jump is only 5 cm less than Gurjeet's jump.
- How long are Gurjeet's and Gopi's jumps?
- Try and see how far you can jump.
- How far can you throw a ball?
- Look for a big ball, like a football or volleyball. How far can you kick it?
Here are the Indian Records and World Records for some jumps.
| Sports | World Record | Indian Record |
| High Jump (Men) | Javier S. (2m 45 cm) | Chandra Pal (2m 17 cm) |
| Long Jump (Men) | Mike P. (8m 95 cm) | Amrit Pal (8m 8 cm) |
| High Jump (Women) | Stefka K. (2m 9 cm) | Bobby A. (1m 91 cm) |
| Long Jump (Women) | Galina C. (7m 52 cm) | Anju G. (6m 83 cm) |
Find out from the table -
How many centimeters more should Chandra Pal jump to equal the Men's World Record for the high jump?
Here are the Indian Records and World Records for some jumps.
| Sports | World Record | Indian Record |
| High Jump (Men) | Javier S. (2m 45 cm) | Chandra Pal (2m 17 cm) |
| Long Jump (Men) | Mike P. (8m 95 cm) | Amrit Pal (8m 8 cm) |
| High Jump (Women) | Stefka K. (2m 9 cm) | Bobby A. (1m 91 cm) |
| Long Jump (Women) | Galina C. (7m 52 cm) | Anju G. (6m 83 cm) |
Find out from the table -
Whose high jump is very close to two and a half meters?
Try to find out:
Which is the highest building that you have seen? About how many rooms high was it?
How high can a plane fly? Can it fly higher than Mount Everest which is about 9 km high?
Now make a chart of the heights of your friends. To measure the centimetres, you can use your small scale.
| Name | Taller/Shorter/Equal to 1 metre | How many centimetres more or less than a metre |
| Shambhu | Taller | 4 centimetres |
| ______ | ______ | ______ |
| ______ | ______ | ______ |
| ______ | ______ | ______ |
| ______ | ______ | ______ |
Which of these will be in centimetres and which will be in metres?
Length of a banana
Which of these will be in centimeters and which will be in meters?
Height of a sugarcane
Which of these will be in centimeters and which will be in meters?
Distance from classroom to school gate
