The perimeter of a square with a diagonal of 12 centimeters is: 33.9 centimeters.
In future, to find out the perimeter of a square when you only know it's diagonal, use Pythagoras or times the diagonal by 2.828427125.
This number is irrational, and is like a pi for the diagonals of squares.
I call it Tau.
It is the relationship between the diagonal of all squares and there perimeter.
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The diagonal is ~16.97 feet.
find the perimeter of a square that has 12 m side
Perimeter = 12+12+12+12 = 48 feet
To find the perimeter of any polygon just add the length of everyside. In this case you have 4 sides with a length of 12 in. so 12 + 12 + 12 + 12 = perimeter. or to simplify 4 * 12 = perimeter.
Let the other diagonal be x If: 0.5*12*x = 30 then x = 60/12 => x = 5 The rhombus has four interior right angle triangles with lengths of 6 cm and 2.5 cm Using Pythagoras each equal sides of the rhombus works out as 6.5 cm Perimeter: 4*6.5 = 26 cm