IB ACIO Grade II practice question
Three solid metal cubes of edges 3 cm, 4 cm and 5 cm are melted together and recast into a single solid cube. Find the edge of the resulting cube.
From a IB ACIO Grade II Quantitative Aptitude practice set · Quantitative Aptitude
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Correct answer: (B) 6 cm
Sum of volumes = 33+43+53 = 27+64+125 = 216 cm3. Let the resulting cube's edge be a. a3 = 216 = 63, so a = 6 cm.
हिंदी में प्रश्न
3 सेमी, 4 सेमी और 5 सेमी भुजा वाले तीन ठोस धातु के घनों को पिघलाकर एक साथ मिलाया जाता है और एक ही ठोस घन बनाया जाता है। बने घन की भुजा ज्ञात कीजिए।
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सही उत्तर: (B) 6 सेमी
आयतनों का योग = 33+43+53 = 27+64+125 = 216 घन सेमी। माना बने घन की भुजा a है। a3 = 216 = 63, अतः a = 6 सेमी।
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