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Question

Which of the following figure has the least perimeter?
Note: Area of each small square = 1 cm2

A
Yellow
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B
Red
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C
Green
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D
All have equal area
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Solution

The correct option is B Red
To find the perimeter, we need to count the number of edges at the boundary of each shape.

Perimeter of yellow figure= 12 cm
Perimeter of red figure = 10 cm
Perimeter of green figure= 12 cm
The red figure has the least perimeter.

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