Question

Two cubes each of slide 10cm are joined end to end, forming a rectangular shaped solid. Find the surface area of the resulting rectangular shaped solid.

Answer 1

When edge of 10 cm  Cube join together the dimensions of formed cuboid are 

Length  (l) = 20 cm

Breadth(b)=10 cm 

Height  (h)=10 cm

Total Surface Area Of cuboid = 2(lb+bh+hl)

                                               = 2(20X10+10X10+10X20)

                                               = 2(200+100+200)          

                                               = 2(500)

                                               = 1000 cm²

Answer 2

length of cube=20
breadth of the cube =10
then,height=10
total surface area of rectangular shaped solid=2(lb+bh+hl)
=2(20×10+10×10+10×20)
= 2(200+100+200)
=2(500)
=1000cm