Question

21) The length of a rectangle is 2 cm more than the breadth. If the perimeter is 84 cm.
find the lengths of the sides of the rectangle.​

Answer 1

Answer:

bhai mujhe nahi aa raha hai

Answer 2

$\mathbb \green{ ɦɨ........ȶɦɛʀɛ \: \: ʊֆɛʀ.}$

Answer :

$\large{\underline{\boxed{\sf Length - 30 cm ; Breadth - 12 cm}}}$

Explanation :-

Given :

Length of rectangle - 18 cm more than it's breadth

Perimeter of the rectangle - 84 cm

To find :

The length and Breadth

Solution :

Let the breadth be 'x' cm

and the length be '(x + 18)' cm

We know that,

Perimeter = 2(length + breadth)

According to question,

$\sf\longrightarrow 2(x + x + 18) = 84</p><p>$

$\sf\longrightarrow 2(2x + 18) = 84$

$\sf\longrightarrow 4x + 36 = 84$

$\sf\longrightarrow 4x = 84 -$

$\sf\longrightarrow 4x = 48$

$\sf\longrightarrow x = \dfrac{48}{4}</p><p>$

$\sf\longrightarrow x = 12</p><p>$

Hence, the value of x is 12

Now,

Breadth => x = 12 cm

Length => x + 18 = 12 + 18 = 30 cm

Hence, the length is 30 cm and the breadth is 12 cm respectively.