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Question

Match the polygons to their corresponding perimeters.

A
22 cm
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B
20 cm
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C
24 cm
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Solution

Perimeter of a polygon is the sum of the lengths of all sides of the polygon.


The perimeter of the above triangle is given by the sum of the lengths of its three sides.

Perimeter=5 cm+7 cm+8 cm
=20 cm


Similarly, the perimeter of the above shape is
5 cm+6 cm+5 cm+8 cm
=24 cm.


Perimeter=4 cm+2 cm+1 cm+
5 cm+3 cm+7 cm
=22 cm

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