Add together the 4 sides
21
28
It is: 4*8 = 32 cm
If one side is 10cm...10 x 4 = 40cm
it is the area of a solid object times by the square root of the perimiter
circumference
no...it's not
base times height minus half of the perimiter base times height minus half of the perimiter
it measures by perimiter it measures by perimiter
perimiter
Twice (length + width)
56
the area is 18
the perimiter =D
multiply all of the sides than that is your answer
No, squares do not represent perimeters.