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Introduction to Mensuration

Perimeter of ...

Question

Perimeter of a rectangle is equal to ____________

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Solution

A rectangle have two lengths and two breadths as shown in the figure.
To find the perimeter, we find the length of the boundary which is equal to sum of all the four sides.
Therefore, $p e r i m e t e r = l + l + b + b = 2 l + 2 b = 2 (l + b)$ , where $l = l e n g t h & b = b r e a d t h$

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