Question

Find the perimeter of rectangle whose length is 8cm and width 12cm

Answer 1

Given :

• Length of the rectangle = 8 cm.

• Breadth of the rectangle = 12 cm.

To find :

• The perimeter of rectangle =?

Formula Used :

• Perimeter of rectangle = 2 ( length + breadth)

Step-by-step explanation :

It is Given that :

Length of the rectangle = 8 cm.

Breadth of the rectangle = 12 cm.

We know that,

Perimeter of rectangle = 2 ( length + breadth)

Substituting the values in the above formula, we get,

= 2 ( 8 + 12)

= 2 ( 20 )

= 2 × 20

= 40.

Therefore, Perimeter of the rectangle = 40 cm.

Answer 2

★ Question

Find the perimeter of rectangle whose length is 8cm and width 12cm.

Identity used

Perimeter of rectangle = 2(length+breadth)

$\leadsto\tt\huge\sf{Given:-}$

$\leadsto\tt Length=8cm\\\leadsto\tt Breadth=12cm$

Solution ◇

$\longrightarrow\tt Perimeter = {2(8+12)}\\\\\tt\longrightarrow perimeter= 2×20\\\longrightarrow\tt Perimeter=40cm$

$\rule{225}2$

Extra knowledge:-

Properties of a Rectangle

• All angles are right or 90°
• The diagonals are congruent and bisect each other (divide each other equally).
• Opposite angles formed at the point where diagonals meet are congruent.
• A rectangle is a special type of parallelogram whose angles are right.