Question

three cubes each of sides 4cm join together side by side to form a cuboid.the surface area of the cuboid is

Answer 1

Dimensions of cuboid are 4*8*4
so surface area of cuboid=
$2(lb + bh + hl)$
=2(4*12+12*4+4*4)
=2(48+48+16)
2*112=224 sq cm

ANS:-224 sq cm

HOPE IT WILL HELP YOU

Answer 2

Dimensions of cuboid are 4×8×4
surface area of cuboid=
2(lb + bh + hl)2(lb+bh+hl) 
=2(4×12+12×4+4×4)
=2(48+48+16)
=2×112
=224 sq cm 
ANS:-224 sq cm