Question

The perimeter of a rectangle is 230 cm. If the length of the rectangle is 70 cm, find the
breadth.

plz in easy way is am in 5 class
​

Answer 1

Answer:

given,

perimeter = 230 cm

length = 70

perimeter = 2(l+b)

230 = 2(l+ 70)

230 = 2l+140

l = 230- 140/2

l = 90/2

l = 45

Answer 2

$\large\textsf{ }$

$\LARGE\mathfrak{\underline{✯\; Given :-}}$

$\large\textsf{ }$

$\qquad\tt{:}\longrightarrow\large\textsf{Perimeter of the rectangle = 230 cm}$

$\qquad\tt{:}\longrightarrow\large\textsf{Length of the rectangle ( l ) = 70 cm}$

$\large\textsf{ }$

$\LARGE\mathfrak{\underline{✯\; To \; \; Find :-}}$

$\large\textsf{ }$

$\qquad\tt{:}\longrightarrow\large\textsf{The breadth of the rectangle ( b ) = ?}$

$\large\textsf{ }$

$\LARGE\mathfrak{\underline{✯\; Formula :-}}$

$\large\textsf{ }$

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

$\large\textsf{ }$

$\LARGE\mathfrak{\underline{✯\; Solution :-}}$

$\large\textsf{ }$

$\bigstar\; \; \; \large\textsf{ {\large\textsf{Perimeter}}_{\large\textsf{( \; Rectangle \; )}} = \large\textsf{2 ( l + b )} }\\\\\\\qquad\tt{:}\longrightarrow\large\textsf{230 = 2 ( 70 + b )}\\\\\\\qquad\tt{:}\longrightarrow\large\textsf{ \cfrac{\cancel{230}^{\; \; 115}}{\cancel{2}} = \large\textsf{ 70 + b } }\\\\\\\qquad\tt{:}\longrightarrow\large\textsf{115 = 70 + b}\\\\\\\qquad\tt{:}\longrightarrow\large\textsf{115 - 70 = b}\\\\\\\qquad\tt{:}\longrightarrow\boxed{\large\textsf\textcolor{red}{45 = b }}$

$\large\textsf{ }$

$\boxed{\large\textsf\textcolor{orange}{∴ The breadth of the rectangle = 45 cm}}$

$\large\textsf{ }$

$\large\textsf\textcolor{purple}{ \; \; \; \; \; \; \; \; \; \; \; \; ◈ ━━━━━━━ ✪ ━━━━━━━ ◈}$