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Find the volume, the lateral surface area and the total surface area of the cuboid whose dimensions are length = 12cm, breadth = 8cm and height = 4.5cm. |
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Answer» It is given that length = 12cm, breadth = 8cm and height = 4.5cm We know that Volume of cuboid = l × b × h By substituting the values we get Volume of cuboid = 12 × 8 × 4.5 By multiplication Volume of cuboid = 432 cm3 We know that Lateral surface area of a cuboid = 2 (l + b) × h By substituting the values Lateral surface area of a cuboid = 2 (12 + 8) × 4.5 On further calculation Lateral surface area of a cuboid = 2 × 20 × 4.5 By multiplication Lateral surface area of a cuboid = 180cm2 We know that Total surface area of cuboid = 2 (lb + bh + lh) By substituting the values Total surface area of cuboid = 2 (12 × 8 + 8 × 4.5 + 12 × 4.5) On further calculation Total surface area of cuboid = 2 (96 + 36 + 54) So we get Total surface area of cuboid = 2 × 186 By multiplication Total surface area of cuboid = 372 cm2 |
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