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If the radius of a circle is decreased by 2 cm, how does the area change? (Use π = 3.14) (2020)

Practice Questions

1 question
Q1
If the radius of a circle is decreased by 2 cm, how does the area change? (Use π = 3.14) (2020)
  1. Decreases by 12.56 cm²
  2. Decreases by 25.12 cm²
  3. Increases by 12.56 cm²
  4. Remains the same

Questions & Step-by-step Solutions

1 item
Q
Q: If the radius of a circle is decreased by 2 cm, how does the area change? (Use π = 3.14) (2020)
Solution: Area change = π[(r-2)² - r²] = π[-4r + 4] = 3.14 * (-4r + 4).
Steps: 0

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