Question : The length, width, and height of a cuboidal box are 18 cm,12 cm, and 10 cm, respectively. What is the total surface area of the box?
Option 1: 1000 cm2
Option 2: 1048 cm2
Option 3: 1032 cm2
Option 4: 1120 cm2
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Correct Answer: 1032 cm 2
Solution :
Length = 18 cm
Width = 12 cm
Height = 10 cm
The formula for the total surface area of a cuboidal box is:
Total surface area = 2 × (Length × Width + Length × Height + Width × Height)
⇒ Total surface area = 2 × (18 × 12 + 18 × 10 + 12 × 10)
⇒ Total surface area = 2 × (216 + 180 + 120)
⇒ Total surface area = 2 × 516
⇒ Total surface area = 1032 cm
2
Hence, the correct answer is 1032 cm
2
.
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