Question

A page is 25 cm long and 20 cm wide . Find the perimeter of this page​

Answer 1

Answer:

90 cm

Step-by-step explanation:

perimeter = 2 (lenght + breadth)

                 = 2 (25 + 20) cm

                 = 2 x 45 cm

                  = 90 cm

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Answer 2

Given:

A page is 25 cm long and 20 cm wide.

To find:

The perimeter of this page.

Solution:

To answer this question, first of all, we should know about the perimeter of rectangle ABCD having length 'l' and breadth 'b'. The perimeter of a rectangle is given by:

$2(l + b)$

Now,

As given, we have,

The length of the page, l = 25 cm

The width or breadth of page, b = 20 cm

So,

the page is in the form of a rectangle.

Hence,

The perimeter of the page

$= 2(l + b)$

$= 2(25 + 20)$

$= 2(45)$

$= 90 \: cm$

Hence, the perimeter of the page is 90 cm.