Question

Two cubes of side 4cm are fixed together .find the total surface area of the new solid form

Answer 1

Hi ,

Let side of each cube = a cm

a = 4 cm

If two cubes are fixed together ,

new solid which formed is cubiod.


Dimensions of the cuboid :

Length = l = 8cm

Breadth = b = 4 cm

Height = h = 4 cm

Total surface area of the new solid

= 2( lb + lh + bh )

= 2[ 8 × 4 + 8 × 4 + 4 × 4 ]

= 2 ( 32 + 32 + 16 )

= 2 × 80

= 160 cm²

I hope this helps you.

: )

Answer 2

Heya !!!



Side of cube = 4 cm


Length of resulting cuboid = 2 × 4 = 8 cm


Height of resulting cuboid = 4 cm


and,



Breadth of resulting cuboid = 4 cm


Therefore,


TSA of resulting cuboid = 2( LB + BH + HL)



=> 2 ( 8 × 4 + 4 × 4 + 4 × 8)


=> 2 ( 32 + 16 + 32)


=> 2 × 80


=> 160 cm².



HOPE IT WILL HELP YOU....... :-)