Question: Find the perimeter of a square having sides of length 2.5 cm each.

A ) 8 cm
B ) 10 cm
C ) 11 cm
D ) 9 cm

Steps to derive

1 Perimeter of the square with side s = 4s

 [Substitute the length of the side.]
2 = 4 × 2.5

 [Multiply.]
3 = 10

4 So, the perimeter of the square is 10 cm.



Hence the right answer is Option B

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