Calculate total area of the margin — task. Mathematics State Board, Class 7.

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A picture of length 27

$cm$ and breadth 17

$cm$ is painted on a chart, such that there is a margin of 3

$cm$ along each of its sides. Determine the total area of the margin.

[Note: The total area of the margin = Area of the chart - Area of the picture]

The total area of the margin is

${cm}^{2}$ .

$1$

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5. Calculate total area of the margin