engineering recuitment PGCIL Diploma Trainee Mock Test 2024 Quantitative Aptitude Mensuration Solid Figures

If the surface area of two spheres is in the ratio 81 ∶ 25, then what is the ratio of their radius.

1

5 ∶ 8

2

7 ∶ 9

3

5 ∶ 7

4

9 ∶ 5

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