SSC SSC CPO Mock Test Series 2025 (Tier I & II) (DP SI & CAPF) Quantitative Aptitude Mensuration Plane Figures
A boy takes 32 seconds less time to cross a semi-circular ground along its shortest path than to cover it once along the boundary. If his speed was 30 m/minute, then the radius of the semi-circular ground is \(\left( {Take\;\pi = \frac{{22}}{7}} \right)\)
1
21 m
2
3.5 m
3
14 m
4
7 m