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SSC CGL 2025 First Shift 📅 12 Sep, 2025

Ring disc outer radius 10 cm, inner 7 cm. Ratio of ring area to outer circle?

A
1:2
B
2:3
C
3:4
D
4:5
Result Summary
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APEDIA

SSC CGL
2025 • 12 Sep, 2025 • First Shift
Ring disc outer radius 10 cm, inner 7 cm. Ratio of ring area to outer circle?
Correct Answer
1:2
Outer area = 100π. Inner = 49π. Ring = 51π. Ratio = 51π : 100π ≈ 1:2....
💡 Analysis & Explanation
Outer area = 100π. Inner = 49π. Ring = 51π. Ratio = 51π
100π ≈ 1:2.