It is the sum of its 4 sides added together
length plus width equals perimetre
^Perimetre. Outer length of a shape.
Perimetre of squre is 4*(side) and side is 8 cm so perimetre is 4*8=32cm
4 times the length of its side.
this is stupidinuss
1/2*perimetre of base*slant height
28 cm
Add up together its 4 sides
By adding the lengths of the 5 sides together.
4 by 4 units
216 cm
The perimeter of any triangle is the sum of its 3 sides