Question

The dimensions of a rectangular field are 120 m  70 m. The field is to be changed into a garden, leaving a path way of 5 m width around the garden. Find the expenses that are met when the cost per square meter is Rs. 10.

Answer 1

Answer:

Let the outer rectangle be ABCD and the inner rectangle be abcd. 

Length and Breadth of the outer rectangle = 120 meter and 70 meter.

The uniform width of the inside path is 5 meter,

So, the length of the inner rectangle = 120 - 10= 110 m 

and the breadth of the inner rectangle = 70 -  10= 60 m

The area of the inner rectangle = 110 × 60 =6600 m²

Cost of covering the garden by grass = Rs 10 per square meter.

The total cost of covering the garden by grass = 10 × 6600

= Rs 66000

Answer 2

Answer:

Let the outer rectangle be ABCD and the inner rectangle be abcd. 

Length and Breadth of the outer rectangle = 120 meter and 70 meter.

The uniform width of the inside path is 5 meter,

So, the length of the inner rectangle = 120 - 10= 110 m 

and the breadth of the inner rectangle = 70 -  10= 60 m

The area of the inner rectangle = 110 × 60 =6600 m²

Cost of covering the garden by grass = Rs 10 per square meter.

The total cost of covering the garden by grass = 10 × 6600

= Rs 66000

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