UPSC EPFO APFC 2023 · Question 103

Question 103 of the UPSC EPFO APFC Recruitment Test 2023 (General Studies) (2 July 2023). Try it first, then check your answer and the explanation in the practice app.

APFC 2023 · Q103 · Quantitative Aptitude · Geometry & Mensuration
A solid circular metallic disc of radius 12 inches and thickness 4 inches is melted and shaped into a solid disc of radius 16 inches. What is the thickness of the new disc in inches?
1. 2
2. 2.25
3. 2.50
4. 2.75
12 इंच त्रिज्या और 4 इंच मोटाई वाली किसी ठोस वृत्ताकार धात्विक चक्रिका (डिस्क) को पिघलाकर उससे 16 इंच त्रिज्या की एक ठोस चक्रिका बनाई जाती है। इस नई चक्रिका की मोटाई (इंच में) क्या है?
1. 2
2. 2.25
3. 2.50
4. 2.75
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