Question

the area of a rectangular field whose length is 3 times breadth is 384 m square estimate its length
to the nearest Whole number of metre

Answer 1

l=3b
l×b=384
3b²=384
b²=128
b=11.3
l=33.9

Answer 2

⇔⇔⇔⇔⇔ YOUR QUESTION :-

The area of a rectangular field whose length is 3 times breadth is 384 m square estimate its length to the nearest Whole number of metre????

⇔⇔⇔⇔⇔ YOUR ANSWER ↓↓↓↓↓↓
→ Let the Breadth be $x$
   then , Length = $3x$
We know Area of rectangle = length * Breadth 

Using the Above Identity ,
384 = 3x *x 
384 = $3x^{2}$
$x^{2}$ = $\frac{384}{3}$
$x^{2}$ = 128 
x= $\sqrt{128}$
x = 11.3 
Nearest Whole Number = 11 .
length = 11 
BREADTH = 33
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ANKIT