Question

Asim is going to cover the path with paving Each paving stone is a square side 30 cm. Each paving stone costs £ 2.50 How many paving stones will it take to cover the path and how much will they cost Asim to buy?

Answer 1

Area of a rectangle

Complete question: Asim is going to cover the path with paving Each paving stone is a square side 30 cm. Each paving stone costs £ 2.50 How many paving stones will it take to cover the path and how much will they cost Asim to buy? Here the length of the garden path is 630 cm and the width is 120 cm.

To find:

1. The number of paving stones required to cover the path
2. The cost to buy those stones

Solution:

Step 1. Finding area of each paving stone:

Given, the length of each side of a paving stone is 30 cm. Thus the area of each stone is

= 30 × 30 cm² = 900 cm²

Step 2. Finding area of the rectangular path:

Given, the length of the path is 630 cm and the width is 120 cm. Thus the area of the path is

= 630 × 120 cm² = 75600 cm²

Step 3. Finding number of paving stones required:

The number of paving stones required is found by dividing the area of the path by the area of each paving stone,

= 75600 / 900 = 84

Step 4. Finding the cost of the paving stones:

Given that, the cost of each paving stone is £2.50

Thus the cost of 84 paving stones is

= £(84 × 2.50)

= £210

Answer:

1. 84 paving stones are required to cover the path
2. The cost to buy those is £210