SSC GD Constable previous year question
The cost of painting a spherical vessel of radius 7 cm is ₹18,480. What is the cost of painting per square centimetre? (Use π = 22/7)
Asked in SSC GD Constable 2025: 11 Feb 2025 Shift 1 · Quantitative Aptitude
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Correct answer: (C) ₹30
Surface area = 4πr² = 4×(22/7)×49 = 616 cm²; cost per cm² = 18480/616 = ₹30.
हिंदी में प्रश्न
त्रिज्या 7 cm वाले एक गोलाकार बर्तन को रंगने की लागत ₹18,480 है। प्रति वर्ग सेंटीमीटर रंगने की लागत क्या है? (π = 22/7 का उपयोग करें)
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सही उत्तर: (C) ₹30
पृष्ठीय क्षेत्रफल = 4πr² = 4×(22/7)×49 = 616 cm²; प्रति cm² लागत = 18480/616 = ₹30।
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