Question

a square plot is of side 40m. a path of uniform breadth 4m Run round it inside the plot. find the cost of covering the path with bricks at ₹2 per square metre and also the cost of putting grass on the remaining portion of plot at the rate of ₹1.25 per square metre​

Answer 1

Answer:

Cost of covering the run around with brick is Rs 1152

And the cost of covering the ground with grass is Rs 1280

Step-by-step explanation:

The square plot has a side length of 40m and if a run around of 4m is made around the square, then the side lengths are decreased by 8m

So, the side length =(40-8)m

=32m

So, the area of the whole plot =(40×40)m²

=1600m²

The area of the ground=(32×32)m²

=1024m²

The area of the run around=(1600-1024)m²

=576m²

Cost of covering the run around with brick

=Rs 2 per m²

So, rhe cost of covering the whole run around

=Rs(576×2)

=Rs 1152

Now, the cost of covering the ground with grass=Rs1.25 per m²

So, cost of covering the whole ground with grass=Rs(1024×1.25)

=Rs 1280