Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Mensuration Plane Figures
The ratio of the outer and the inner circumferences of a circular path is 11 ∶ 7. If path is 20 metres wide, then what is the radius of the inner circle?
1
35 metres
2
20 metres
3
55 metres
4
More than one of the above
5
None of the above