RRB Group D previous year question
The curved surface area and the height of a right circular cylinder are 924 cm² and 14 cm, respectively. Find its diameter (in cm). Use π = 22/7
Asked in RRB Group D CBT-1: 08 Jan 2026 Shift 3 · Quantitative Aptitude
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Correct answer: (A) 21
CSA = 2πrh → 924 = 2×(22/7)×r×14 = 88r → r = 10.5, diameter = 21 cm.
हिंदी में प्रश्न
एक लम्ब वृत्तीय बेलन का वक्र पृष्ठीय क्षेत्रफल और ऊंचाई क्रमशः 924 cm² और 14 cm है। इसका व्यास (cm में) ज्ञात कीजिए। π = 22/7 का उपयोग कीजिए
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 20
सही उत्तर: विकल्प A (20)
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