Question

Four cubes of side 2 cm are joined end-to-end.The surface area of the resulting

Answer 1

length = 2+2+2+2 = 8 cm

breadth= 2 cm

height = 2 cm

after joining the cubes , it will form cuboid

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

= 2(8*2+2*2+8*2)

= 2(16+4+16)

= 2(36)

= 72 cm ^2