RRB Technician Grade 3 practice question
A circular running track has a radius of 49 m. Find the cost of fencing along its boundary at Rs 10 per metre. (Use π = 22/7)
From a RRB Technician Grade 3 Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (C) Rs 3,080
Circumference = 2×(22/7)×49 = 308 m. Cost = 308 × 10 = Rs 3,080.
हिंदी में प्रश्न
एक वृत्ताकार दौड़ ट्रैक की त्रिज्या 49 मीटर है। इसकी सीमा के चारों ओर Rs 10 प्रति मीटर की दर से बाड़ लगाने का खर्च ज्ञात कीजिए। (π = 22/7 लें)
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) Rs 3,080
परिधि = 2×(22/7)×49 = 308 मीटर। खर्च = 308 × 10 = Rs 3,080.
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