Civil Services UPSC EPFO (EO/AO) Mock Test 2023 Quantitative Aptitude Mensuration Plane Figures

The area enclosed between the circumferences of two concentric circles is 16π cm2 and their radii are in the ratio 5 ∶ 3. What is the area of the outer circle?

1
9π cm2
2
16π cm2
3
25π cm2
4
36π cm2
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