1.

Two cubes each of edge 3 cm are joined end to end find the surface area of resulting cube

Answer»

Answer :

  • surface area of resulting cube is 90cm²

Given :

To find :

  • surface area of resulting cuboid

Solution :

if two cubes joined them length of resulting cube becomes 6CM , height becomes 3cm and breadth becomes 3cm so ,

  • Given Two cubes each if edge is 3cm so ,

  • Length is 3cm
  • breadth is 3cm
  • height is 6cm

As we know that ,

  • Surface area of cuboid = 2(lb + bh + lh)

● 2(3×3 + 3×6 + 6×3)

● 2(9 + 18 + 18)

● 2(45)

● 90

HENCE, surface area of resulting cuboid is 90cm²


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