If the radius of a circle is tripled, how does the area change? (2019)

Practice Questions

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Q1
If the radius of a circle is tripled, how does the area change? (2019)
  1. Increases by 3 times
  2. Increases by 6 times
  3. Increases by 9 times
  4. Remains the same

Questions & Step-by-step Solutions

1 item
Q
Q: If the radius of a circle is tripled, how does the area change? (2019)
Solution: Area = πr². If radius is tripled, new area = π(3r)² = 9πr², which is 9 times the original area.
Steps: 0

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