Question

Two cubes of side 4 cm are fixed together. Find the total surface area of the new
solid formed.
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Answer 1

Answer:

Solution :-

When the two cubes are fixed together, the resulting solid is a cuboid.

Length of the cuboid, = 2 × edge of the cube = 2*4 = 8 cm

Breadth of the cube = 1 × edge of the cube = 4 cm

Height of the cube = 1 × edge of the cube = 4 cm

Total surface area of the cuboid = 2*(LB + BL + LH)

⇒ 2*(8*4 + 4*4 + 4*8)

⇒ 2*(32 + 16 + 32)

⇒ 2*80

⇒ 160 sq cm

So, the total surface area of the cuboid is 160 sq cm

Answer.

Answer 2

Step-by-step explanation:

The new solid formed will be cuboid.

Length of cuboid = 8cm

Breadth = 4cm

Height = 4cm

Total surface area = 2 ( lb+bh+lh)

= 2 ( 32 + 16 + 32)

= 2* 80

= 160 cm2