Question

A rectangular field has an area 28800 sq.meter.Its length is twice as long as its width. What is the length of its sides????

Answer 1

Let the width of rectangle be x
Length=2x
A=l*b
So,
28800=2x*x
28800=3x
28800/3=x
9600=x

Answer 2

let the width be x.

therefore its length will be 2x.

Area of rectangle = length × breadth
$28800 = 2 {x }^{2} \\ {x }^{2} = 14400 \\ x = \sqrt{14400} \\ x = 120$