The ratio of the areas of two circle is 4/9 what is the ratio of their radii
The ratio of the areas of two circles is equal to the square of the ratio of their radii.
Let the radii of the two circles be r1 and r2 respectively.
Given: The ratio of the areas of the two circles is 4/9.
Therefore, (π * r1^2) / (π * r2^2) = 4/9
Simplifying, we get r1^2 / r2^2 = 4/9
Taking the square root of both sides, we get r1 / r2 = 2/3
Hence, the ratio of their radii is 2/3.