RRB Group D previous year question
The sides of a triangle ABC are AB = 5 cm, BC = 6 cm and CA = 7 cm, respectively. Another triangle is formed by joining the mid-points of the sides of the triangle ABC. Find the perimeter of the second triangle in cm.
Asked in RRB Group D CBT-1: 09 Jan 2026 Shift 1 · Quantitative Aptitude
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Correct answer: (D) 9
The mid-point triangle's perimeter is half the original: (5+6+7)/2 = 9 cm.
हिंदी में प्रश्न
एक त्रिभुज ABC की भुजाएं क्रमशः: AB = 5 cm, BC = 6 cm और CA = 7 cm हैं। त्रिभुज ABC की भुजाओं के मध्य-बिंदुओं को मिलाकर एक दूसरा त्रिभुज बनाया जाता है। दूसरे त्रिभुज का परिमाप cm में ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 9
सही उत्तर: विकल्प D (9)
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