Question

Derive formula for lateral surface area of cuboid

Answer 1

Answer:

LSA of cuboid=2h(l+b)

area of 4 rectangles sum=lh+bh+bh+lh

=2lh+2bh

=2h(l+b)

Answer 2

LSA of cuboid=2(l+b)h

It can be derived as,

We can see 4 sides of a cuboid which is also preferred as area of 4 walls of a room.

Area of 2 sides = 2bh

Area of another 2 sides = 2lh

If we add these we get , 2(l+b)h

Hope my answer helps you.

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