Find the surface area (in cm2) of a cardboard box in the shape of a cuboid whose length is 60 cm, breadth is half its length and height is one-third of its breadth.
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. 5400.
Length (l) = 60 cm
Breadth (b) = 60 / 2 = 30 cm
Height (h) = 30 / 3 = 10 cm
Surface Area of a cuboid = 2(lb + bh + lh)
= 2[(60 × 30) + (30 × 10) + (60 × 10)]
= 2(1800 + 300 + 600)
= 2(2700)
= 5400
Therefore, the surface area of the cardboard box is 5400 cm2.