Question

7
1. 2 cubes each of volume 64 cm are joined end to end. Find the surface area of the
resulting cuboid.​

Answer 1

The volume of cube 64$cm^{2}$

Side of cube 364

​=4cm

Length of resulting cuboid 4+4=8

Surface area

=2(lb+hl+bh)

=2(4(4)+4(8)+8(4))=2(16+32+32)=2(80)=160$cm^{2}$