The perimeter is all of the sides added together. So 4+4+4+4 is 16. The perimeter is 16cm.
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Perimeter of a square = 4 x side units Side = 19 cm So, Perimeter = 4 x 19 cm = 76 cm
square has four sides 4 (sides) x 5 (cm) 4 X 5 = 20cm
Perimeter = 4*23 = 92 cm providing the sides are 23 cm
It is: 4+4+4+4 = 16 cm
40 cm (10cm x 4 sides = 40cm)