Question

Three cubes, each with 4 cm edge, are joined end to end. Then, the total surface area of the resultant cuboid is ___.${\text{cm}}^2$

Answer 1

Dimensions of the cuboid formed :

l = 12 cm
b = 4 cm
h = 4 cm

Total surface area of the cuboid formed = 2 $(l\times b+b\times h+l\times h)$

= $2(12\times 4+4\times 4+4\times 12)=224c{m}^2$