Question

The length and the breadth of a rectangular field are in the ratio 5 : 3. If its perimeter is
128 m, find the dimensions of the field.
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Answer 1

Answer:

80 x 48

Explanation:

128/8 = 16

16 x 5 = 80

16 x 3 = 48

to check, 80 + 48 = 128

Answer 2

Answer:

let the length and breadth of the field be 5x m and 3x m respectively

Explanation:

Since, perimeter of rectangle :-

2 ( length+breadth )

therefore, the field = 2 ( 5x + 3x ) = 128

= 2 × 8x = 128

= 16x = 128

= x = 128÷16

= x = 8

Now, we know that x = 8

Therefore, length= 5x m =5×8m = 40 m

Breadth = 3x m =3×8m = 24 m

So dimension = 40 m × 24 m = 960m²