Draw the shape with the help of net.

Try to fold the net mentaly.

Apply formula A = 6 x a square

Draw the shpes as per details.

First, find the surface area of the cuboid and then find the height of the cuboid.

You have to find the area of 5 faces of the cuboidal room.

Think of the formula of surface area of a cuboid.A= 2(lb+bh+hl)

Find the missing side of cube and then find the area of cuboid.

First find the radius of cylinder and then find the area of cube by using diameter as side of the cube.

Find the curved surface area of the cylinder and then double it to get the outer surface area.