Question

perimeter of rectangle whose length is 21 cm and breadth is 15 cm​

Answer 1

Answer:

2(length + breath)

Step-by-step explanation:

2(21+15)

42+30

72

ans 72 cm

Answer 2

• As per the data given in the question, we have to the perimeter of a rectangle.

       Given data:- Length=$21cm.$

                            Breadth=$15cm.$

       To find:- The perimeter of a rectangle.

• Rectangle has four sides, the opposite sides are equal to each other.
• The perimeter of a rectangle is $2(length+breadth).$

       Therefore,

       $=2(length+breadth)\\=2(21+15)\\=2\times36\\=72cm.$

     The perimeter of rectangle is $72cm.$