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If the radius of a circle is tripled, how does the area change? (2019)
If the radius of a circle is tripled, how does the area change? (2019)
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Practice Questions
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Q1
If the radius of a circle is tripled, how does the area change? (2019)
Increases by 3 times
Increases by 6 times
Increases by 9 times
Remains the same
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Area = πr². If radius is tripled, new area = π(3r)² = 9πr², which is 9 times the original area.
Questions & Step-by-step Solutions
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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.
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