Question

The area of a rectangular field whose length is twice its breadth is 2450 m Find the perimeter of the field

Answer 1

Let the breadth be x then length is 2x.
So, 2x^2=2450
x^2=1225
x=35 m
and perimeter=2(x+2x)=6x=210 m

Answer 2

Let the breadth of the field be x.

Therefore, length if the field will be 2x.

Area of field = 2450

or, x × 2x = 2450

or, 2x² = 2450

or, x² = 2450/2

or, x² = 1225

or, √x² = √1225

or, x = 35m

if Breadth = 35m
Then length = 35 × 2 m = 70m

Perimeter of field = 2(length+ breadth)

= 2 (35+70)
= 2 × 105
= 210m

Answer) Perimeter of field is 210m.