Question

Two cubes of side 2 cm are joined together. What will be the total surface area of new solid so formed?​

Answer 1

Answer :

40 cm²

Solution :

Given,

Two cubes of side 2 cm are joined together.

⇢ length of new solid = 2 + 2 = 4

⇢ breadth of new solid = 2

⇢ height of new solid = 2

So the new solid will be a cuboid

TSA of cuboid

↪ 2(lb + bh + hl)

↪ 2(4×2 + 2×2 + 2×4)

↪ 2(8 + 4 + 8)

↪ 2(20)

↪ 40 cm²