Well, isn't that just lovely? If the side length of a square is 12mm, then all four sides are equal in length. So, to find the perimeter, you simply add up all the sides, which would be 12mm + 12mm + 12mm + 12mm, giving you a total perimeter of 48mm. Just imagine all the happy little measurements coming together to create a beautiful square!
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Since a square has four sides, just multiply the side length by four: 12mm x 4 = 48 mm
4*length of its side.
Perimeter of square = 4*length of side = 4*12.5 in = 50 inches.
Yes it is.
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Oh honey, it's not rocket science. The perimeter of a square is just the sum of all its sides. So for a square with side length 's', you just add 's' four times to get the perimeter. Easy peasy lemon squeezy!