16 identical cubes with edges measuring 4cm are joined together in 4 rows of 4 cubes each. What will be the surface area of the new 3-d shape formed

Question

The length,breadth and the height may change and even the formula acoording to the shape can....

Answer 1

Think of this like a closed lid box.

The top and bottom are 16cm by 16cm

The 4 sides are all 16cm by 4cm

 

Surface area is the sum of the areas of the 6 sides

 

16(16)(2) + 16(4)(4) = 512 + 256 = 768 cm²