It's 22.4 cm! 3.2+3.2+8+8= 22.4. Check it on a calculator.
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Each side is 8cm so the perimeter is 4*8 = 32 cm
32 cm
32 centimeters (a square has four equal sides meaning you can add 8+8+8+8 or multiply 8*4 to get 32
If the shape measuring 8 centimeters by 5 centimeters is a rectangle, the perimeter of the rectangle is 25 centimeters (2w + 2l)
The perimeter would be 26cm.