police AP Police Constable (Pre + Mains) Mock Test 2022 Quantitative Aptitude Mensuration Plane Figures
The area enclosed by the circumferences of two concentric circles is 423.5 sq.cm. If the circumference of the outer circle is 132 cm, then the radius of the inner circle is
1
8 cm
2
6.5 cm
3
12.25 cm
4
17.5 cm