Question

lenght of rectangular park is 400 m and boundary is 1200 m find the breadth​

Answer 1

Answer:

boundary means it's perimeter

let's it's breadth be y

perimeter of rectangle = 2×(l+b)

1200= 2 × (400+y)

1200= 800+2y

1200-800= 2y

400/2= y

200 is the breadth.

Answer 2

Step-by-step explanation:

so that

we know that

perimeter of rectangular park =2(l+b)

=2(400+b)

=800+2b

- 2b =800