2012 · Q91
The circumferences of two circles are in the ratio 2:3. What is the ratio of their areas?
Elementary MathematicsMensuration
- A2:3
- B4:9
- C1:3
- D8:27
Explanation
Areas scale as the square of circumferences: 4:9.
The circumferences of two circles are in the ratio 2:3. What is the ratio of their areas?
Explanation
Areas scale as the square of circumferences: 4:9.