Question
The length of a cuboid is 8 cm and breadth is 7 cm. If
the volume of the cuboid is 392 cubic cm, find the total surface area of ​​the cuboid.Solution
ATQ,
Length of cuboid = 8 × 7 = 56 cm
Breadth of cuboid = 7 cm
Height of cuboid = 7 cm
Total surface area of cuboid = 2 × (lb + bh + hl)
So, required area = 2 × (56 × 7 + 7 × 7 + 7 × 56) = 2 × (392 + 49 + 392) = 1,666 cm²
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