Find the perimeter of a triangle of sides 3 cm, 4 cm and 5 cm.

60 m

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12 cm

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12 m

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60 cm

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Solution

The correct option is B 12 cm
Perimeter of a closed figure is the sum of lengths of all of its sides.
Given, sides of a triangle are 3 cm, 4 cm and 5 cm.
Then, its perimeter = (3 + 4 + 5) cm
= 12 cm

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