Mensuration 3D

Quantitative Aptitude ( CCS) Mathematics - All Exams

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The whole surface area of a cuboid 28 cm long, 16 cm broad and 7.5 cm height, is:

1556 cm²

1500 cm²

1570 cm²

1530 cm²

Explanation:

Area of the whole surface = 2(lb + bh + lh)
= 2(28 × 16 + 16 × (15/2) + 28 × (15/2))
= 2(28 × 16 + 8 × 15 + 14 × 15)
= 2(448 + 120 + 210)
= 2(778) = 1556 cm²

By: MIRZA SADDAM HUSSAIN

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