Question

The length of a rectangular field is thrice its breadth. Its perimeter is 400m find the length and breadth .

Answer 1

Answer:

Let length of rectangular field be x.

ATQ;

breadth = 3x

perimeter of rectangular field= 2(l+b)

2(x+3x)

8x=400

x=50

so length is 50 m

breadth = 3*50 = 150m

Answer 2

$\sf\huge\underline{Answer :-}$

The length and breadth of the rectangular is 150m and 50m respectively

$\huge{\mathfrak{\underline{Solution}}}$

Let the breadth be 'x'

and the length be '3x'

We know that,

$\sf Perimeter = 2(l + b)$

$\sf\rightarrow 2(l + b) = 400$

$\sf\rightarrow 2(3x + x) = 400$

$\sf\rightarrow 2(4x) = 400$

$\sf\rightarrow 8x = 400$

$\sf\rightarrow x = \dfrac{400}{8}$

$\sf\rightarrow x = 50$

Hence, The breadth of the field is 50m

Now, The length(3x) is 150m