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The surface area of a cuboid is 758cm2. Its length and breadth are 14cm and 11cm respectively. Find its height. |
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Answer» It is given that Surface area of cuboid = 758 cm2 The dimensions of cuboid are Length = 14cm Breadth = 11cm Consider h as the height of cuboid We know that Surface area of cuboid = 2 (lb + bh + lh) By substituting the values 758 = 2 (14 × 11 + 11 × h + 14 × h) On further calculation 758 = 2 (154 + 11h + 14h) So we get 758 = 2 (154 + 25h) By multiplication 758 = 308 + 50h It can be written as 50h = 758 – 308 By subtraction 50h = 450 By division h = 9cm Therefore, the height of cuboid is 9cm. |
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