Question

Three cubes of edges 8cm are joined end to end.find the surface area of the resulting cuboid.

Answer 1

now length of cuboid=8+8-8=24cm
b.=8cm
he.=8cm
area of cuboid=2(lb+BH+hl)
=2(24×8+8×8+8×24)
=2(192+64+192)
=2×448
=896cm^2

Answer 2

The surface area of the resulting cuboid is 896 $(cm)^{2}$.

Step-by-step explanation:

1. Length of sides of each cube is 8 cm.

3. On joining the three cube, it will be converted into cuboid shape (square prism) Which

  Length(L) = 8+8+8= 24 (cm)

   Width(B)= 8 (cm)

   Height(H)= 8 (cm)

3. Now

   Total surface area of cuboid = 2×(L×B+B×H+L×H)

                                                     = 2×(24×8+8×8+24×8)

                                                     = 2×(192+64+192)

                                                     = 2×448

                                                     =896 $(cm)^{2}$