Question

The perimeter of a playground is 72 if wide of the playground is 18 find its length

Answer 1

Given

$\bold{ Perimeter \ of \ the \ playground} = 72 \ m$

$\bold{ Width \ of \ the \ playground} = 18 \ m$

Let the length of the playground be x.

SOMETHING YOU NEED TO KNOW

Area of the rectangle = Length * Breadth

Perimeter of the rectangle = 2(Length+Breadth)

$\implies 2(Length+Breadth) = Perimeter$

$\implies 2(x+18)=72$

$\implies x+18=\dfrac{72}{2}$

$\implies x + 18 = 36$

$\implies x = 36-18$

$\implies x = 18 \ m$

$\boxed{\boxed{\bold{Therefore, \ the \ length \ of \ the \ playground \ is \ 18 \ m}}}}$

                                                     

Answer 2

Answer:

Length = 18 units

Step-by-step explanation:

Perimeter = 72 units

width = 18 units

length = ? units

Perimeter = 72 units

=> 2( Length + width ) = 72

=> 2( Length + 18 ) = 72

=> 2Length + 36 = 72

=> 2Length = 72 - 36

=> 2Length = 36

=> Length = 36/2 = 18 units Ans...