The builder has to tile the inside of the house and the open patio outside,determine how many boxes of the tile the builder will need,size 300mm×300mm,7 tiles per box,R185,99 per box?

To calculate the number of boxes needed, we first need to determine the total area of the inside of the house and the open patio outside that needs to be tiled.

Let's assume the dimensions of the inside of the house are 10m x 10m and the dimensions of the open patio outside are 5m x 5m.

Area of inside of the house = 10m x 10m = 100m²
Area of open patio outside = 5m x 5m = 25m²

Total area to be tiled = 100m² + 25m² = 125m²

Now, we need to convert the area from square meters to square millimeters as the size of each tile is given in millimeters.

1m² = 1,000,000mm²
125m² = 125,000,000mm²

Now, we need to calculate the number of tiles required to cover this area.

Each tile is 300mm x 300mm = 90,000mm²

Number of tiles required = 125,000,000mm² / 90,000mm² = 1388.89

Since we cannot purchase a fraction of a tile, we will round up to the nearest whole number.

Number of tiles required = 1389

Now, we need to calculate the number of boxes needed.

Each box contains 7 tiles.

Number of boxes required = 1389 / 7 = 198.43

Again, we will round up to the nearest whole number.

Number of boxes required = 199

Therefore, the builder will need 199 boxes of tiles to tile the inside of the house and the open patio outside. At R185.99 per box, the total cost will be:

Total cost = 199 boxes x R185.99 per box = R37,013.01

Assumptions:

- The tiles are square and have a dimension of 300mm x 300mm.
- Each box contains 7 tiles.
- The price per box is R185.99.

Calculating Surface Area:

Inside of the House:

- Dimensions not specified, so we cannot calculate the surface area.

Open Patio:

- Dimensions not specified, so we cannot calculate the surface area.

Number of Boxes Required:

Since we do not have the surface areas, we cannot calculate the number of boxes required.

Example Calculation:

If we assume the house has a surface area of 50m² (for illustration purposes only), and the open patio has a surface area of 25m²:

Total Surface Area:

- 50m² + 25m² = 75m²

Number of Tiles Required:

- 75m² ÷ (0.3m x 0.3m) = 833.33 tiles

Number of Boxes Required:

- 833.33 tiles ÷ 7 tiles per box = 119.05 boxes

Note: This is an approximation, and the actual number of boxes required would depend on the actual surface areas of the house and patio, as well as any cuts or other factors.