Question

Three cubes each of the side 1.5cm are joined end to end ,the surface area of resulting solid is

Answer 1

hiiiii mate


three cubes of side 1.5 cm result in cubiod formation

who's
length=4.5cm
breadth= 1.5cm
height=1.5cm

total surface area of cubiod is
=TSA = 2 (lw + wh + hl) 

=2(4.5×1.5+1.5×1.5+1.5×4.5)
=2(6.75+2.25+6.75)
=2(15.75)
=31.5cm²

Answer 2

when the three cubes are joined, the resulting solid would be a cuboid of the respective sides given below:

length=1.5+1.5+1.5=4.5cm

breadth=1.5cm

height=1.5cm

surface area of cuboid=2(lb+bh+hl)

                                      =2(4.5*1.5+1.5*1.5+1.5*4.5)

                                        =2(6.75+2.25+6.75)

                                          =31.5cm^2

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