How to work out the amount of tiles or slabs needed to cover a floor or wall space (math help).
There are basically two ways that you can use to work out how many tiles or slabs that you need to fit a rectangular floor/wall space:
Method 1 (this method works best for calculator questions):
Step 1. Work out the area of the floor and the area of the tile. Do this by multiplying the two sides together as the flooring area and tiles will be rectangular or square shaped.
Step 2.Once this is done divide the area of the floor by the area of the tile.
Method 2 (this method works best for non-calculator questions)
Step 1. Work out how many tiles you can fit along the length of the floor. Do this by dividing the length of the floor by the length of the tile.
Step 2. Work out how many tiles you can fit along the width of the floor. Do this by diving the width of the tile by the width of the floor.
Step 3. Multiply the answers from steps 1 and 2 to give the amount of tiles that fit the floor.
Work out how many 20cm by 20cm square tiles will be needed to cover a floor that is 1.8m long and 80cm wide?
Area of the floor = 180 × 80 = 14400 cm² (1.8m has been changed to 180cm so that all the units are the same).
Area of the tile = 20 × 20 = 400 cm²
14400 ÷ 400 = 36 tiles
The amount of tiles that fit along the length are:
180 ÷ 20 = 9
The amount of tiles that fit along the width are:
80 ÷ 20 = 4
So if you multiply these two answers together you get the amount of tiles that fit the floor:
9 × 4 = 36 tiles
Notice that both methods give the same amount of tiles.
More by this Author
To calculate the 3 point moving averages form a list of numbers, follow these steps: 1. Add up the first 3 numbers in the list and divide your answer by 3. Write this answer down as this is your first 3 point moving...
A compound shape is a shape that is made up from other simple shapes. In this article we will be working out the area of a L shape (made up from 2 rectangles). To find the area of a compound shape, follow these simple...
The surface area of a triangular prism can be found in the same way as any other type of prism. All you need to do is calculate the total area of all of the faces. A triangular prism has 5 faces, 3 being rectangular and...