Question

Four cubes each of side 2 cm are joined end to end. Find the surface are of the resulting cuboid

Answer 1

CSA of cube is 4a²

So,

4*2 is 8
because its four then
plus 8four times So its is
32

Answer 2

$\bf\huge\textbf{\underline{\underline{According\:to\:the\:Question}}}$  

Length = 8 , Breadth = 2 , Height = 2

$\bf\huge\bf\huge{\boxed{\bigstar{{Surface\:area\:=2\times h(l + b)}}}}$        

$\bf\huge\bf\huge{\boxed{\bigstar{{Put\:the\:Value}}}}$

= 2 × 2 (8 + 2)

= 4 × 10

= 40

Total Surface Area = 2(lb + bh + hl)

= 2(8 × 2 + 2 × 2 + 2 × 8)

= 2(16 + 4 + 16)

= 2 × 36

= 72

$\bf\huge\bf\huge{\boxed{\bigstar{{Hence\:answer\:is\:72}}}}$