Question

Find the cost of fencing a rectangular field which is 400 m long and 200 m broad at the rate of Rs. 7 per meter.

Answer 1

Answer:

Rs.84

Step-by-step explanation:

The perimeter of the rectangular field = 2(l+b) = 2(400+200) = 1200m

Cost of fencing 1 m = Rs. 7

Cost of fencing 1200 m = 1200 × 7 = Rs.84

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Answer 2

In context to question asked,

We have to determine the cost of fencing a rectangular field having dimensions 400 m long and 200 m broad at the rate of Rs. 7 per meter.

As we know that,

For fencing a rectangular field,

We will fence the outer borders of the field and for calculating the distance of value of perimeter of rectangular field, we will calculate the perimeter of the field.

So, the perimeter of field will be $=2(400+200) = 2\times 600 = 1200\:m$

So, for fencing at the rate of Rs. 7 per meter, we will multiply 7 by the value of perimeter of field.

So, we will get the value as,

$Cost = 7 \times 1200 = Rs.\:8400$

Hence, a total of Rs. 8400 is needed for fencing the field which is 400 m long and 200 m broad at the rate of Rs. 7 per meter.