Question

the area of rectangular field whose length is 3 times its breadth is 384 m². estimate its length to the nearest whole number?

Answer 1

let breadth be x
length 3x=384m x=384/3=124.3

Answer 2

According to the question ,
if we take breadth as X m,
then length will be 3X m.
And given area is 384 m^2
Area of rectangle= l.b,
By substituting the values of breadth and length, it can be written as (X . 3X ) = 384
3X^2 = 384
X^2 = 384/3
X^2 = 128
X = √128
X= 8√2