Question

the breadth of a rectangle is'n' cm and the length and the length is 4 times that of breadth what is the perimeter of rectangle?​

Answer 1

Correct Question:-

• The breadth of a rectangle is 'n' cm and the length is 4 times that of breadth and perimeter is 240 cm. Then find the length and breadth?

To Find:-

• Find the perimeter.

Solution:-

• Let the breadth be ' n '

• Length is ' 4n '

According to the Question:-

$\longrightarrow\sf \: Perimeter_{ ( rectangle ) } = 2( l + b )$

$\longrightarrow\sf \: 240 = 2( 4n + n )$

$\longrightarrow\sf \: 250 = 2( 5n )$

$\longrightarrow\sf \: 240 = 10n$

$\longrightarrow\sf \: n = \cancel\dfrac { 240 } { 10 }$

$\longrightarrow\sf \: n = 24 cm$

Hence ,

• Breadth is 24 cm

• Length is 4x = 96 cm

Answer 2

ǫᴜᴇsᴛɪᴏɴ-:

the breadth of a rectangle is'n' cm and the length and the length is 4 times that of breadth what is the perimeter of rectangle?

sᴏʟᴜᴛɪᴏɴ-:

Let the breadth be n

And the Length is 4n

$\pink\looparrowright$$\bf{Perimeter~of~rectangle=2(l+b)}$

$\pink\looparrowright\bf \: 240 = 2( 4n + n )$

$\pink\looparrowright\bf \: 250 = 2( 5n )$

$\pink\looparrowright\bf \: 240 = 10n$

$\pink\looparrowright\bf \: n$ = $\bf\cancel\dfrac{240}{10}$

$\pink\looparrowright\bf \: n = 24 cm$

ᴀɴsᴡᴇʀ ᴏʙᴛᴀɪɴᴇᴅ-:

★Breadth is 24 cm

★Length is 4x = 96 cm