Arithmeticmedium · Past Paper
What is the ratio of area of two circles if their circumference ratio is 2:3?
A4:9
B2:3
Csqrt(2):sqrt(3)
D8:27
✓ Correct Answer: A — 4:9
Circumference ratio C1:C2 = r1:r2. Area ratio = r1^2 : r2^2 = (2:3)^2 = 4:9.
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