Question

perimeter of a rectangle is 25 cm, one of the side of this rectangle is 7.5cm,find the length of other side?​

Answer 1

Answer:

x=3.33333

Step-by-step explanation:

let 1 side of the rectangle be x.

x*7.5=25

x=25/7.5

x=250/75

x=10/3

or

x=3.33333

Answer 2

$\maltese\LARGE\textsf{\underline{ FiGuRe :-}}$

$\large\textsf{ }$

$\large\textsf{Length = 7.5 cm}$

$\boxed{\begin{array}{ c c c c } \; \; \; \; & \; \; \; \; & \; \; \; \; & \; \; \; \; \\\\ \; \; \; \; & \; \; \; \; & \; \; \; \; & \; \; \; \; \\\\ \; \; \; \; & \; \; \; \; & \; \; \; \; & \; \; \; \;\end{array}}$ Breadth = 5 cm

$\large\textsf{ }$

$\maltese\LARGE\textsf{\underline{ GiVeN :-}}$

$\large\textsf{ }$

$\qquad\tt{:}\longrightarrow\large\textsf{Perimeter of rectangle = 25 cm}$

$\qquad\tt{:}\longrightarrow\large\textsf{Length of the rectangle = 7.5 cm}$

$\large\textsf{ }$

$\maltese\LARGE\textsf{\underline{ To FiNd :-}}$

$\large\textsf{ }$

$\qquad\tt{:}\longrightarrow\large\textsf{Breadth of the rectangle = ?}$

$\large\textsf{ }$

$\maltese\LARGE\textsf{\underline{ FoRmUla :-}}$

$\large\textsf{ }$

$\boxed{\large\textsf\textcolor{purple}{ {\large\textsf{Perimeter}}_{\large\textsf{( \; Rectangle \; )}} = \large\textsf{2 ( l + b )} }}$

$\large\textsf{ }$

$\maltese\LARGE\textsf{\underline{ SoLuTiOn :-}}$

$\large\textsf{ }$

$\qquad\tt{:}\longrightarrow\large\textsf{Perimeter of the rectangle = 2 ( l + b )}$

$\qquad\tt{:}\longrightarrow\large\textsf{25 = 2 ( 7.5 + b )}$

$\qquad\tt{:}\longrightarrow\large\textsf{25 = 15 + 2b}$

$\qquad\tt{:}\longrightarrow\large\textsf{25 - 15 = 2b}$

$\qquad\tt{:}\longrightarrow\large\textsf{10 = 2b}$

$\qquad\tt{:}\longrightarrow\large\sf \xcancel\cfrac{10}{2} \: \: \: = \: \: \: b$

$\qquad\tt{:}\longrightarrow\large\boxed{ \sf \color{red} 5 \: \: cm\: \: \: = \: \: \: b}$

$\large\textsf{ }$

$\qquad\tt{}\large\therefore\boxed{\large\textsf\textcolor{orange}{The breadth of the rectangle = 5cm}}$