Question

the perimeter of a rectangular field is 42 the ratio of its length and breadth 5:2 find the dimension of the field ​

Answer 1

Step-by-step explanation:

let the length be 5x

and breadth be 2x

perimeter of rectangular fiel = 2(l+b)

42 = 2(5x+2x)

42 = 2(7x)

42/2 = 7x

21 = 7x

21/7 = x

x = 3

so, length = 5×3 = 15

and breadth = 2×3 = 6

Answer 2

Answer:

Step-by-step explanation:let the length and breadth of the rectangle be 5x and 2x,

Perimeter of the rectangle=2(l+b)

42=2(5x+2x)

7x=42/2

7x=21

x=21/7

x=3

Now dimensions of the field=5×3=15

=2×3=6