Question

The edge of a cube is 3 cm. Find the TSA and volume of a cuboid formed by three such cubes joined edge to edge.

Answer 1

Answer:

When three cubes of side 3.2 cm are joined, the resulting shape is a cuboid of length 3.2×3=9.6 cm; breadth =3.2 cm and height =3.2 cm

So, total surface area of a cuboid =2(lb+bh+lh)

=2(9.6×3.2+3.2×3.2+9.6×3.2)

=143.36 sq.cm