Following figures are formed by joining six unit squares. Which figure has the smallest perimeter in Fig. 6.4?



For First figure:


Perimeter = Total number of sides × length of each side


= 10 × 1


= 10 cm


For second figure:


Perimeter = Total number of sides × length of each side


= 12 × 1


= 12 cm


For third figure:


Perimeter = Total number of sides × length of each side


= 14 × 1


= 14 cm


For fourth figure:


Perimeter = Total number of sides × length of each side


= 14 × 1


= 14 cm


So correct answer is D [i].

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