Aniston is going to paint all four walls and the cieling in his living room. The mesurments is 6m length, 4m width and 2m height. a tin covers 20m2. How many tins of paint does aniston need to buy?
2(6* 2) + 2(4 * 2) + (4 * 6) = 64 square meters
64 / 20 = ________ tins
Round up.
ceiling ... length * width
long walls (2) ... length * height
short walls (2) ... width * height
no mention of entryways ... but there has to be at least one
i acc dont understand
but
3
right?
64/20 = 3.2
Since you can't buy 2 tenths of a tin, you need to round up to 4 tins.
To calculate the number of tins of paint Aniston needs to buy, we need to determine the total surface area that needs to be painted.
First, let's calculate the surface area of each wall. Since the living room has four walls, we multiply the area of one wall by four.
Surface area of one wall = length * height = 6m * 2m = 12m²
Surface area of four walls = 12m² * 4 = 48m²
Next, let's calculate the area of the ceiling.
Surface area of the ceiling = length * width = 6m * 4m = 24m²
Now, we can calculate the total surface area that needs to be painted by adding the surface area of the four walls to the area of the ceiling.
Total surface area to be painted = 48m² (walls) + 24m² (ceiling) = 72m²
Given that each tin of paint covers 20m², we can divide the total surface area to be painted by the coverage area per tin to find the number of tins needed.
Number of tins of paint needed = Total surface area ÷ Coverage area per tin
Number of tins of paint needed = 72m² ÷ 20m² = 3.6 tins
Since you cannot buy a fraction of a tin, Aniston will need to buy 4 tins of paint to cover all four walls and the ceiling of his living room.