Find the area (in cm2) of the card board that is required to make a box of size 12 cm × 14 cm × 8 cm.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 752.
Total surface area = 2 × (l × b + l × h + b × h)
Total surface area = 2 × (12 × 14 + 12 × 8 +14 × 8)
Total surface area = 2 × (168 + 96 + 112)
Total surface area = 2 × 376 = 752 cm2