SSC CHSL Tier-1 previous year question
A hemisphere's volume (numerically) equals its total surface area. What is its radius?
Asked in SSC CHSL Tier-1 (13 Nov 2025 Shift 3) · Quantitative Aptitude
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Correct answer: (B) 4.5 units
Volume = (2/3)πr³; total surface area = 3πr². Setting equal: (2/3)r = 3 → r = 4.5 units.
हिंदी में प्रश्न
एक अर्धगोले का आयतन (संख्यात्मक रूप से) उसके कु ल पृष्ठीय क्षेत्रफल के बराबर है। त्रिज्या ज्ञात कीजिए।
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सही उत्तर: (B) 4.5 यूनिट
आयतन = (2/3)πr³; कु ल पृष्ठीय क्षेत्रफल = 3πr²। बराबर रखने पर: (2/3)r = 3 → r = 4.5 यूनिट।
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