There is no such thing as a permiter. Furthermore, a 4 by 8 shape cannot be a square.
you do bxh-2xl
If you have the length and the width, add them together and double that sum.
It depends on what a permiter is! The perimeter is 30 units of length.
lxwxh
Circumference, or distance around the outside
28
30
Area of a triangle is A=1/2*apothem*Permiter orA=1/2*B*HSquare is A=L*W
You times when doing area. You add when finding permiter.
Assuming that you want the perimeter of a square, then the answer is 4*length of a side.
You find the length and height of the shape, them you find the volume