Solved UPSC CDS/OTA Question
A solved UPSC CDS/OTA PYQ - decoded step-by-step.
Solve it the standard way once - then learn the shortcut.
Q · Mensuration Medium · 45s
TopicMensuration
Question Typemultiple choice
DifficultyMedium
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Final Answer: Option @img@:https://digitalbenchersfiles.s₃.ap-south-1.amazonaws.com/1754986004881Screenshot%202025-08-12%20at%201.36.34%20PM.png :@img@