Question

10)In a rectangular ground 40 m long and 30 m wide, lawn of width 2 m is to be grown on all the four sides inside the ground. Find the cost of growing the lawn at the rate of 20 per square metre. ​

Answer 1

Answer:

Rs 5280

Step-by-step explanation:

• Length of ground = 40 m

• Breadth of ground = 30 m

• Area of rectangular ground =  40 m * 30 m

                                                       = 1200 sq m

• Lawn of width 2m is grown on all four sides of the lawn.

       Therefore 40 – 4 = 36 and 30 – 4 = 26

• Area of empty space will be, 36 * 26

                                                      = 936 sq m

• Area of the rectangle – area of empty space = 1200 – 936 = 264 sq m

• Cost of 1 sq m of growing the lawn is Rs 20

       Therefore cost of 264 sq m will be 264 x 20 = Rs 5280