12
The perimeter of a square with sides of 23 centimetres is equal to 23 x 4 = 92 centimetres.
Hcucugi
A perimeter is a measure of length and so cannot be 16 square centimetres - which is a measure of area. As it happens, a square with a perimeter of 16 centimetres will have sides of 4 cm and so an area of 16 square centimetres.
Perimeter = pi*diameter = 113.1 cm
Each side of the square would be three centimetres. Therefore, the perimeter would be (3 x 4) = 12 centimetres.
Perimeter = 4*3.2 = 12.8 cm
That's because "perimeter" means the distance around something - not the spaces inside. If you count squares inside a figure, you are finding the AREA, not the PERIMETER.
40cmIf the square has an area of 100 square centimetres, then each side is 10 centimetres long. With four sides, this gives a perimeter of 10 x 4 = 40 centimetres.
A decagon has 10 sides, therefore, with side length 13.5 centimetres, the perimeter would be 13.5 x 10 = 135 centimetres.
49 square centimetres.
P = 24cm
P = 32cm