SSC GD Constable practice question
A hollow iron roller, length 98cm, girth 176cm, thickness 4cm. Volume of metal (cu.cm) is
From a SSC GD Constable Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) 64,064
2πR=176 → R=28. r=24. Volume=(22/7)(28²−24²)(98)=(22/7)(208)(98)=22×208×14=64,064.
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हिंदी में प्रश्न
एक खोखला लोहे का रोलर, जिसकी लंबाई 98 सेमी, परिधि (girth) 176 सेमी और मोटाई 4 सेमी है। इसमें प्रयुक्त धातु का आयतन (घन सेमी में) है
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सही उत्तर: (C) 64,064
2πR=176 → R=28। r=24। आयतन=(22/7)(28²−24²)(98)=(22/7)(208)(98)=22×208×14=64,064।
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