engineering recuitment AAI ATC Junior Executive 2025 Mock Test Series Quantitative Aptitude Mensuration Plane Figures
The radii of three concentric circles are in the ratio of 4 : 5 : 7. What is the ratio of the area between the two inner circles to that between the two outer circles?
1
4 : 7
2
5 : 9
3
3 : 8
4
4 : 5