RPF Constable previous year question
The length of a rectangular field is twice its breadth. If the perimeter of the field is 120 m, find its area.
Asked in RPF Constable 2025: Shift 2 · Quantitative Aptitude
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Correct answer: (A) 800
Perimeter=2(l+b)=2(3b)=6b=120 → b=20 m, l=40 m. Area=l×b=800 sq m.
हिंदी में प्रश्न
एक आयताकार मैदान की लंबाई उसकी चौड़ाई की दोगुनी है। यदि मैदान का परिमाप 120 मीटर है, तो उसका क्षेत्रफल ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (A) 800
परिमाप=2(l+b)=2(3b)=6b=120 → b=20 मी, l=40 मी। क्षेत्रफल=l×b=800 वर्ग मी।
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