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9. Perimeter and Area
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Q3 of 131 Page 226

36 unit squares are joined to form a rectangle with the least perimeter. Perimeter of the rectangle is

Area of rectangle formed


= 36 units


We have, 36 = 6×6


= 2


=


=


So the sides of the rectangle are 4cm and 9cm.


So perimeter = 2(l + b)


= 2(4 + 9)


= 2(13)


= 2


= 26 units

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1

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2

A rectangular piece of dimensions 3 cm × 2 cm was cut from a rectangular sheet of paper of dimensions 6 cm × 5 cm (Fig. 9.14).

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5

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Questions · 131
9. Perimeter and Area
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