What is the length of the wooden strip required to frame a photograph of length and breadth $ 32 \mathrm{~cm} $ and $ 21 \mathrm{~cm} $ respectively?

AcademicMathematicsNCERTClass 6

Given:

The length and breadth of the photograph are $32\ cm$ and $21\ cm$ respectively.

To do:

We have to find the length of the wooden strip.

Solution:

We know that,

Perimeter of a rectangle of length $l$ and breadth $b$ is $2(l+b)$

Length of the photograph $= 32\ cm$

Breadth of the photograph $= 21\ cm$

The length of the required wooden strip $ = $ Perimeter of the photograph

Therefore,

The length of the required wooden strip $= 2 (32+21)$

$= 2(53)$

$= 106\ cm$

The length of the wooden strip is $106\ cm$.

raja
Updated on 10-Oct-2022 13:36:27

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