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When drawing a circle with a compass, if you change the radius to 3 cm, how does the size of the circle change compared to a circle with a 6 cm radius?
  • a)
    The circle will be half as big
  • b)
    The circle will be one-quarter as big
  • c)
    The circle will be twice as big
  • d)
    The circle will be three times as big
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
When drawing a circle with a compass, if you change the radius to 3 cm...
Understanding Circle Sizes
When comparing circles of different radii, it's essential to understand how the radius affects the overall size of the circle, particularly the area.
Circle Radius and Area
- The radius of a circle is the distance from the center to any point on the circumference.
- The area of a circle is calculated using the formula: Area = π × (radius)².
Comparing the Circles
1. Circle with a 6 cm radius:
- Area = π × (6)² = π × 36 = 36π cm².
2. Circle with a 3 cm radius:
- Area = π × (3)² = π × 9 = 9π cm².
Size Comparison
- To determine how these areas compare:
- The area of the 3 cm radius circle (9π cm²) is a fraction of the area of the 6 cm radius circle (36π cm²).
- Specifically, 9π cm² is one-quarter of 36π cm².
Conclusion
- Therefore, when the radius is reduced from 6 cm to 3 cm, the area of the circle will indeed be one-quarter the size of the larger circle.
- Thus, the correct answer is option b): The circle will be one-quarter as big.
This illustrates how changing the radius significantly impacts the area of a circle.
Free Test
Community Answer
When drawing a circle with a compass, if you change the radius to 3 cm...
The area of a circle is one-quarter when the radius is halved.
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When drawing a circle with a compass, if you change the radius to 3 cm, how does the size of the circle change compared to a circle with a 6 cm radius?a)The circle will be half as bigb)The circle will be one-quarter as bigc)The circle will be twice as bigd)The circle will be three times as bigCorrect answer is option 'B'. Can you explain this answer?
Question Description
When drawing a circle with a compass, if you change the radius to 3 cm, how does the size of the circle change compared to a circle with a 6 cm radius?a)The circle will be half as bigb)The circle will be one-quarter as bigc)The circle will be twice as bigd)The circle will be three times as bigCorrect answer is option 'B'. Can you explain this answer? for Class 6 2024 is part of Class 6 preparation. The Question and answers have been prepared according to the Class 6 exam syllabus. Information about When drawing a circle with a compass, if you change the radius to 3 cm, how does the size of the circle change compared to a circle with a 6 cm radius?a)The circle will be half as bigb)The circle will be one-quarter as bigc)The circle will be twice as bigd)The circle will be three times as bigCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 6 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for When drawing a circle with a compass, if you change the radius to 3 cm, how does the size of the circle change compared to a circle with a 6 cm radius?a)The circle will be half as bigb)The circle will be one-quarter as bigc)The circle will be twice as bigd)The circle will be three times as bigCorrect answer is option 'B'. Can you explain this answer?.
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