Question

the perimeter of a rectangular swimming pool is 154 m its length is 2 m more than twice it's breath what are the length and the breath big the pool​

Answer 1

Let the breadth of rectangular swimming pool be x metres.
Then, its length =(2x+2) metres.
We know that the Perimeter of a rectangle =2(Length+Breadth)
=2(2x+2+x)=6x+4
According to the given condition, we have
6x+4=154
⇒6x=154−4
⇒6x=150
⇒ x/6= 150/6
⇒x=25
Thus,
breadth =25 m
length =25×2+2=52 m

Answer 2

Given :

The Perimeter of a rectangular swimming pool is 154 m.

Length is 2 m more than twice its breadth.

To Find :

Length and Breadth of the pool .

Solution :

$\longmapsto\tt{Let\:breadth\:be=x}$

As Given that length is 2 m more than twice its breadth. So ,

$\longmapsto\tt{Length=2x+2}$

Using Formula :

$\longmapsto\tt\boxed{Perimeter\:of\:Rectangle=2(l+b)}$

Putting Values :

$\longmapsto\tt{154=2(2x+2+x)}$

$\longmapsto\tt{\cancel\dfrac{154}{2}=3x+2}$

$\longmapsto\tt{77-2=3x}$

$\longmapsto\tt{75=3x}$

$\longmapsto\tt{x=\cancel\dfrac{75}{3}}$

$\purple\longmapsto\:\large\underline{\boxed{\bf\blue{x}\pink{=}\red{25}}}$

Therefore :

$\longmapsto\tt{Length\:of\:pool=2(25)+2}$

$\longmapsto\tt\bf{52\:m}$

$\longmapsto\tt{Breadth\:of\:pool=x}$

$\longmapsto\tt\bf{25\:m}$