20cm
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20cm because a square as 4 sides and if u add 5+5+5 it will equal 20
hope this helped all u really have to do is use ur brainnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn :)
The perimeter is 7 cm
If the area of the square is 64 square cm then its sides are 8 cm. Its perimeter: 8+8+8+8 = 32 cm
Then the square will have 4 equal sides of 5cm with a perimeter of 20cm and an area of 25 square cm
Area of square: 1/16 square cm
the perimeter of a square that has a side length of 7 cm is........28cm squared