Question

the length and breadth of a rectangular field in ratio 11:7 if its perimeter is 3240 cm find its dimension​

Answer 1

Answer:

let the common multiple be x

now, l=11x

b=7x

and perimeter=32m40cm=32×100+40

=3240cm

perimeter of rectangle=2(l+b)

3240=2(11x+7x)

3240=2(18x)

3240/2 =18x

1620=18x

1620/18=x

x=90

so, their dimensions are...

length=11×90

=990cm

and,breath=7×90

=630cm

Step-by-step explanation:

Answer 2

Answer:

let the common multiple bex

now, I = 11x

b = 7x

& Perimeter of rectangle = 2(I+b)

3240 = 2(11x +7x)

3240 = 2(18x)

3240/2 = 18x

1620/18 = x

x = 9

So, their dimensions are---

lenght = 11x90

= 990cm

& breath = 7x 90

= 6300

Hope it helps, pl marks it Brainliest .