Question

two cubes each with side 'b' are joined to form a cuboid .what is the total surface area of this cuboid​

Answer 1

l=2b

b=b

h=b

Surface area of cuboid=2[Lb+bh+hl]

= 2[2bxb+bxb b+bx2b]

= 2[5b^2]

= 10b^2

Answer 2

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When add the length of sides of two cubes.then cuboid is:

length of cuboid = (b+b) units =2b unit

Breadth of cuboid= b unit

Height of cuboid = b unit

Total area of cuboid =2(l×b+b×h+h×l)

=2(2b×b+b×b+b×2b)

=2(2b^2+b+2b^)

=2×5b^2

=10b^2 s.q unit

☆hope it's help uh,✾☆✾✌✅