Answer :
Surface area is 22mm²
Required solution :
After noticing the question we got to knew that we need to calculate the surface area of cuboid and we've been provided with the values of length, breadth and height of it.
★ Surface area of cuboid :
Substituting values,
>> S.A. = 2 (2 × 3 + 2 × 1 + 3 × 1)
>> S.A. = 2 (6 + 2 + 3)
>> S.A. = 2 (8 + 3)
>> S.A. = 2 (11)
>> S.A. = 2 × 11
>> S.A. = 22