If the ratio of the areas of two squares is 9:1 ratio of their perimeters is_________?
Correct answer: B. 3:1
- A. 9:1
- B. 3:1
- C. 3:4
- D. 1:3
Explanation
The area ratio of squares equals the square of their side ratio, so a 9:1 area ratio gives side ratio √9:√1 = 3:1. Perimeter is directly proportional to side, hence the perimeter ratio is 3:1; option a, 9:1, confuses area ratio with perimeter ratio.
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