Question

The cost of fencing a square garden is ruppes 400 at rate of ruppes 1 per metre .Find the area of the garden in square metres

Answer 1

here,

cost of fencing= perimeter of square

400=4a

a=100m

area of square=a×a

100×100= area

area of square= 10000m2

Answer 2

Cost of Fencing a garden = Rs 400

Cost of fencing garden per meter = Rs 1

$perimeter = \frac{total \: cost \: }{per \: meter \: cost} \\ = \frac{400}{1} \\ = 400m$

Perimeter of Square = 400m

4 × side = 400

$side = \frac{400}{4} \\ = 100m$

Area of Square = Side × Side

= 100 × 100

= 10,000 sq. m