state gov TSPSC DAO (Divisional Accounts Officer) Mock Test 2024 Quantitative Aptitude Mensuration Plane Figures
From the following diagram when the outer circles all have radii ‘r‘, then the radius of the inner circle is
1
\(\sqrt 2\)r
2
\((\sqrt 2 - 1)r\)
3
\(1 \over \sqrt 2 r\)
4
\(\frac{2}{{\left( {\sqrt 2 + 1} \right)r}}\)