Question

The cost of fencing a square lawn at
rupees 14 per metre is rupees 28000 find the cost of mowing the lawn at rupees 54 per 100 metre square

Answer 1

Answer :

Cost of fencing a square lawn at Rs. 14 = Rs. 28000

Cost of fencing per meter = Rs. 14

Perimeter of the square lawn = Cost of fencing lawn / Rate = 28000 / 14 = 2000 m

Let the side of square be ' s ' m

Perimeter of the square lawn = 4s

=> 2000 = 4s

=> 2000 / 4 = s

=> 500 = s

Area of the square lawn = s² sq.units

= 500²

= 250000 m²

Cost of mowing the lawn per 100 m² = Rs. 54

Cost of mowing the law per 1 m² = Rs. 54 / 100

Cost of mowing the square lawn = 250000 × 54 / 100 = Rs. 135000

Hence the cost of mowing the square lawn is Rs. 135000.

Answer 2

Answer:

Step-by-step explanation:

Hi

We are given that cost of fencing a square lawn at 14₹ per meter is 28000₹.

So,

Perimeter of the square lawn is:-

Total cost/cost per meter

=> 28000/14

= 2000 meter

So the perimeter of the square lawn is 2000 meter

We know perimeter of a square = 4a

Where 'a' is the side of the square.

So,

4a = 2000

a = 500 meter

So the side of the square lawn is 500 m.

Mowing the lawn refers to finding the area of the square lawn.

So,

We know area of square = a×a

Where 'a' is the side of the square lawn.

And 'a' = 500m

So Area of the square lawn => 500×500

Area = 250000 meter square.

So we need to find the cost of mowing the square lawn at 54₹ per 100 meter square.

So total cost = 250000 × (54/100)

= 2500 × 54

= 135000 ₹

So cost of mowing the square lawn = 135000 ₹