We have been given Asim is going to cover the path with paving. Each paving stone is a square of side 30 cm.
Let us find area covered by each stone.
Since the paving stone is square, so it area would be square of each side length.
[tex]\text{Area of paving stone}=(\text{30 cm})^2=900\text{ cm}^2[/tex]
The dimension of rectangular path are 630 cm and 120 cm.
We know that area of rectangle is width times length, so area of garden would be length times width.
[tex]\text{Area of rectangular path}=75600\text{ cm}^2[/tex]
To find the number of stones, we will divide area of path by area of each stone.
[tex]\text{Stone used to cover the path}=\frac{75600\text{ cm}^2}{900\text{ cm}^2}[/tex]
[tex]\text{Stone used to cover the path}=84[/tex]
Therefore, it will take 84 stones to cover the path.
We have been given that each paving stone costs £2.50, so total cost would be [tex]2.50\times 84=210[/tex].
Therefore, it will cost £210.
