Question: If two circles have radii in the ratio 3:5, what is the ratio of their areas?
Options:
3:5
9:25
15:25
5:3
Correct Answer: 9:25
Solution:
Area ratio = (r1/r2)² = (3/5)² = 9/25.
If two circles have radii in the ratio 3:5, what is the ratio of their areas?
Practice Questions
Q1
If two circles have radii in the ratio 3:5, what is the ratio of their areas?
3:5
9:25
15:25
5:3
Questions & Step-by-Step Solutions
If two circles have radii in the ratio 3:5, what is the ratio of their areas?
Ratio of Areas – The area of a circle is proportional to the square of its radius, so the ratio of the areas of two circles can be found by squaring the ratio of their radii.
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