alleryWhich expression gives the lateral surface area of a cuboid of length l, breadth b and height h?
A2(lb + bh + hl)
Bl × b × h
C2h(l + b)
D2(l + b) + h
Answer & Solution
Correct answer: C. 2h(l + b)
1. Lateral surface means the four side faces, leaving out top and bottom.
2. These faces total 2(h × l + b × h) = 2h(l + b).
3. 2(lb + bh + hl) includes the top and bottom too.
_Source: NCERT Class 8 Mathematics, Chapter 9 Mensuration, 9.4.1 Cuboid_
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