Question

A rectangular plot of land has 40m×30m . There are 5 square flowerbeds each of side 2.5m . Find area of remaining plot. Also, find the cost of ploughing 5 flowerbeds at the rate of rs 25 per m²

Answer 1

Answer:

area of rectangle = l*b

therefore, 40m*30m = 1200  m²

area of 1 flowerbed= side * side

as it has a shape of a square and the area of a square is side * side

so, 2.5m * 2.5m = 6.25 m²

area of remaining plot= 1200-6.25 = 1193.75 m²

cost of ploughing 5 flowerbeds at the rate of 25 per m² =

6.25 * 25 = 156.25

here comes your answer.

Step-by-step explanation:

Answer 2

Answer:

The cost of ploughing the flower beds will be Rs 781.25 The area of the plot not covered with flower beds is 1168.75 square meters

Step-by-step explanation:

The total area of the rectangular plot will be calculated using the formula for finding the area of a rectangle, that is

     $Area of a rectangle(plot)= L(length of the plot) *W (width of the plot)$

                                            =40 m *30 m

                                            =1200 square meters

The next step will be finding the area of each square flower beds, from the formulae of finfding the area of a squaerw, that is;

           $Area of a square(flower bed)= Square of a side s² (length of the side of each square bed²)$                                             = 2.5m²

                                           =6.25 m²

Therefore the total area covered by the five Flowers beds will be the size of each flower bed multiplied by the five flower beds, that is;

          $Total area= area of a single flower bed * 5 flowerbeds$

                           =6.25*5

                          =31.25m²

so the area of the remaining plot becomes;

             $Remaining plot =Area of the whole plot - the sum of individual flower bed areas$

                          =(1200-31.25)m²

                          =1168.75m²

The cost of ploughing the flower beds  at the rate of rs 25 per meter will be calculated as;

         $Cost= Rate * Area (sq meters)$

                                            =Rs 25/m* 31.25    

                                           =Rs 781.25