 Hi and welcome to the session. Let us discuss the following question. The question says Mrs. Koshik has a square plot with the measurements as shown in the figure. She wants to construct a house in the middle of the plot. A garden is developed around the house. Find the total cost of developing a garden around the house at the rate of Rs. 55 per meter square. Before proceeding for the solution, let's recall the area of a square and area of a rectangle. So area of a square is side square and area of rectangle is length into width. This is the key idea for this question. Now let us proceed with its solution. In this question, we need to find the cost of developing a garden around the house. So here is the garden, the shaded area. Now for that we need to find the area of the garden. And to find the area of the garden, first of all we will find the area of the plot and area of the house. Then we will subtract area of the house from the area of the plot to get the area of garden. So let us start by finding out area of plot. This is a square plot with side 25 meters and we know that the area of the square is side square. So area of plot is 25 meter square that is equal to 625 meter square. Now let us find the area of house which is a rectangle with length 20 meters and width 15 meters. And the area of rectangle is length into width. So area of the house will be length 20 meters into width that is 15 meters that is 300 meter square. Therefore area of garden is equal to area of plot minus area of house which is equal to area of plot that is 625 meter square minus area of house that is 300 meter square which gives 325 meter square. So area of garden is 325 meter square. Now we need to find the cost of developing a garden around the house at the rate of rupees 55 per meter square. So let us write it here that rate of developing a garden is rupees 55 per meter square. Therefore total cost of developing a garden is equal to area of garden multiplied with rate per meter square. So this is equal to rupees area of garden that is 325 into rate per meter square that is 55 equal to rupees 17,875. So the total cost that is rupees 17,875 is the required answer. With this we have finished this session hope you must have enjoyed it. Goodbye and take care.