The cost of fencing a square lawn at the rate of rs 1.60 per metre is rs 3520. Find the cost of mowing the lawn at rs 8.4 per 100 square metre.
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Area of fence=perimeter of square
Cost of fencing =rs 3520
Let one side of square=a
Perimeter of square =4a
Perimeter=3520/1.60
=2200
4a=2200
a=2200/4
=550
Area of square=a^2
=550^2
=302500
Cost of mowing =3025 x rs 8.4
=Rs 25410
Cost of fencing =rs 3520
Let one side of square=a
Perimeter of square =4a
Perimeter=3520/1.60
=2200
4a=2200
a=2200/4
=550
Area of square=a^2
=550^2
=302500
Cost of mowing =3025 x rs 8.4
=Rs 25410
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