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1). 6182). 6603). 7924). 814 |
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Answer» The ratio of length and breadth of a cuboid is 5 : 4. The ratio of breadth and height of this cuboid is 3 : 2. LCM of 4 and 3 is 12. So, ratio of length, breadth and height will be 15 : 12 : 8. Let length, breadth and height be 15T, 12T and 8T, respectively. ⇒ 15T × 12T × 8T = 1440 ⇒ cube of T = 1 ⇒ T = 1 So, length, breadth and height are 15 cm, 12 cm and 8 cm, respectively. ∴ Total surface AREA = 2(15× 12 + 12 × 8 + 8 × 15) = 792 SQUARE cm |
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