Arithmeticmedium · Past Paper
The ratio of the radii of two circles is 2:3. Find the ratio of their areas.
A2:3
B4:9
Csqrt(2):sqrt(3)
D8:27
✓ Correct Answer: B — 4:9
Area of a circle is proportional to the square of its radius. Ratio = 2^2 : 3^2 = 4:9.
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