Calculate the surface area and volume of a concrete block with dimensions 390 mm x 190 mm x 190 mm.

Given dimensions: Length (L) = 390 mm, Width (W) = 190 mm, Height (H) = 190 mm.
Since 1 cm = 10 mm:

The surface area of the concrete block is $\boxed{\text{3686 cm}^2}$.

2.2.2

L = 39 cm, W = 19 cm, H = 19 cm.

The volume of the concrete block is $\boxed{\text{14091 cm}^3}$.

2.2.3
The "RDP plans in 2.1" or the "floor plan" which contain the dimensions of the external walls of the RDP house are not provided in the image. Without these dimensions, it is not possible to calculate the total area of the walls and subsequently the number of pallets of concrete blocks required.

2.2.4
The number of concrete blocks calculated in 2.2.3 is an estimation because it does not account for factors such as breakages during transport or construction, wastage from cutting blocks to fit specific areas (e.g., around windows or doors), or the mortar joints between blocks which reduce the number of blocks needed for a given area.

3.1.1

The provinces visible on the map are:

• North West
• Gauteng
• Mpumalanga
• Kwazulu Natal
• Eastern Cape
• Northern Cape There are $\boxed{\text{6}}$ provinces that can be seen on the map.

3.1.2

Following the N1 south from Bloemfontein towards the Northern Cape, the next town indicated on the route is Trompsburg.
The town you will find next to the N1 on route from Bloemfontein to the Northern Cape is $\boxed{\text{Trompsburg}}$.

3.1.3

The area of the Free State is 129 437 km², which forms 10.6% of the area of the whole of South Africa.
Let A be the total area of South Africa.

The area of the whole of South Africa is approximately $\boxed{\text{1221103.77 km}^2}$.